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                                                                   EXHIBIT 10.15

                      AMENDMENT TO BUSINESS LOAN AGREEMENT
                                                                  DATE: 11/23/99
FirstMerit Bank, N.A., is the holder of several Business Loan Agreements between
AMERICAN STONE CORPORATION and FIRSTMERIT BANK, N.A.

FOR VALUE RECEIVED, the undersigned and FirstMerit Bank, N.A. hereby acknowledge
and consent to amend said Loan Agreement as follows:

         1.       UNDER THE SECTION ENTITLED "NEGATIVE COVENANTS"; SUBSECTION
                  ENTITLED "CONTINUITY OF OPERATIONS", ADD THE FOLLOWING
                  PROVISIONS:

                  Notwithstanding the foregoing, Borrower may (i) pay quarterly
                  dividends to American Stone Industries, Inc. ("Parent") equal
                  to the interest accrued under an 8.00% Convertible
                  Subordinated Note, dated September 23, 1999, issued by Parent
                  and payable to Roulston Ventures Limited Partnership (the
                  "Subordinated Note") and (ii) pay a dividend or dividends to
                  Parent in an amount equal to the outstanding principal amount
                  of the Subordinated Note upon and after maturity of the
                  Subordinated Note, but in any case, only so long as no Event
                  of Default has occurred and is continuing or would result from
                  the payment of any such dividends. Any payments in excess of
                  the accrued interest payable under the Subordinated Note prior
                  to its maturity are prohibited.

It is expressly agreed by the parties hereto that this Amendment to the Loan
Agreement does not change any other terms or conditions of said Loan Agreement
not specifically amended herein, and that all such terms and conditions not
amended shall remain in full force and effect and are expressly applicable to
the terms of this Amendment to Loan Agreement.

The makers, sureties, guarantors and endorsers hereby authorize and empower any
Attorney-at-Law in the State of Ohio, in our names and behalf, or in the name
and behalf of any of us to appear before any court in the State of Ohio having
statutory jurisdiction to render a cognovit judgment against any of the makers
or endorsers at any time after this obligation becomes due, and waive process
and service thereof, and, without notice, confess judgment against us, or any of
us, in favor of us, in favor of the Bank, for the amount that may appear to be
due hereon for principal, interest, damages, and cost of suit, releasing all
errors in judgment so confessed and waiving all right and benefit of appeal, and
any and all proceedings to set aside, vacate, open, suspend, or reverse such
judgment or any execution issued for the collection thereof.

FIRSTMERIT BANK, N.A.                      AMERICAN STONE CORPORATION

By:  /s/ Lawrence P. Allen                     By:  /s/ James M. Rallo
     -----------------------------------          ------------------------------
         Lawrence P. Allen                              James M. Rallo

Title:      Assistant Vice President           Title:      President
      ----------------------------------             ---------------------------

WARNING - BY SIGNING THIS PAPER, YOU GIVE UP YOUR RIGHT TO NOTICE AND COURT
TRIAL. IF YOU DO NOT PAY ON TIME, A COURT JUDGMENT MAY BE TAKEN AGAINST YOU
WITHOUT YOUR PRIOR KNOWLEDGE AND THE POWERS OF A COURT CAN BE USED TO COLLECT
FROM YOU REGARDLESS OF ANY CLAIMS YOU MAY HAVE AGAINST THE CREDITOR WHETHER FOR
RETURNED GOODS, FAULTY GOODS, FAILURE ON HIS PART TO COMPLY WITH THE AGREEMENT,
OR ANY OTHER CAUSE.<PAGE>   1

                                                                    EXHIBIT 10.2
                                                                    ------------

                       ANTHONY & SYLVAN POOLS CORPORATION
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                       1999 LEVERAGED STOCK PURCHASE PLAN
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1.       PURPOSE

         The purpose of this Plan is to advance the long-term interests of
Anthony & Sylvan Pools Corporation by (i) motivating directors and executive
personnel by means of long-term incentive compensation, (ii) furthering the
identity of interests of participants with those of the shareholders of the
Corporation through the ownership and performance of the Stock of the
Corporation and (iii) permitting the Corporation to attract and retain directors
and executive personnel upon whose judgment the successful conduct of the
business of the Corporation largely depends. Toward this objective, the
Committee may grant selected executives and directors (i) the right to purchase
Stock of the Corporation financed by loans arranged by, and guaranteed by, the
Corporation, (ii) long-term incentive awards payable in cash in amounts
sufficient to repay said loans, and (iii) stock options under the Anthony &
Sylvan Pools Corporation 1999 Long-Term Incentive Plan (the "Long-Term Incentive
Plan") contingent on participation in said leveraged stock purchase plan, on the
terms and subject to the conditions set forth in the Plan.

2.       DEFINITIONS

         2.1 "Administrative Policies" means the administrative policies and
procedures adopted and amended from time to time by the Committee to administer
the Plan.

         2.2 "Award" means any form of Stock Purchase Opportunity (as defined in
Section 8) or long-term incentive award granted under the Plan, whether singly,
in combination, or in tandem, to a Participant by the Committee pursuant to such
terms, conditions, restrictions and limitations, if any, as the Committee may
establish by the Award Agreement or otherwise.

         2.3 "Award Agreement" means a written agreement with respect to an
Award between the Corporation and a Participant establishing the terms,
conditions, restrictions and limitations applicable to an Award. To the extent
an Award Agreement is inconsistent with the terms of the Plan, the Plan shall
govern the rights of the Participant thereunder.

         2.4      "Board" means the Board of Directors of the Corporation.

         2.5 "Change in Control" shall mean the first to occur of the following
events: (i) when any "person" as defined in Section 3(a)(9) of the Exchange Act
and as used in Sections 13(d) and 14(d) thereof, including a "group" as defined
in Section 13(d) of the Exchange Act, but excluding the Corporation and any
employee benefit plan sponsored or maintained by the Corporation (including any
trustee of such plan acting as trustee), directly or indirectly, becomes the
"beneficial owner" (as defined in Rule 13d-3 under the Exchange Act, as amended
from time to time), of securities of the Corporation representing more than
fifty percent (50%) of the combined voting power of the Corporation's then
outstanding securities; or (ii) the completion of a transaction requiring
shareholder approval for the acquisition of substantially all of the stock or
assets of the Corporation by an entity other than the Corporation or any merger
of the Corporation into another company and the Corporation is not the surviving
company. Notwithstanding anything else in this Plan, "Change in Control" shall
not include any change for reasons of bankruptcy, insolvency or otherwise for
the benefit of the Corporation's creditors

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         2.6 "Code" means the Internal Revenue Code of 1986, as amended from
time to time.

         2.7 "Committee" means the Compensation Committee of the Board, or such
other committee designated by the Board, authorized to administer the Plan under
Section 3 hereof.

         2.8 "Corporation" means Anthony & Sylvan Pools Corporation, an Ohio
corporation.

         2.9 "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

         2.10 "Interest Loan" means a loan pursuant to Section 8(c) hereof.

         2.11 "Key Employee" means an employee of the Corporation who holds a
position of corporate vice-president or higher.

         2.12 "LTI Award" means a Long-Term Incentive Award granted pursuant to
Section 8(d) hereof.

         2.13 "Participant" means any individual to whom an Award has been
granted by the Committee under this Plan.

         2.14 "Plan" means the Anthony & Sylvan Pools Corporation 1999 Leveraged
Stock Purchase Plan.

         2.15 "Stock" means Common Stock, no par value, of the Corporation.

         2.16 "Stock Exchange" means the Nasdaq SmallCap Market or, if the Stock
is no longer traded on the Nasdaq SmallCap Market, then such other market price
reporting system on which the Stock is traded or quoted designated by the
Committee after it determines that such other exchange is both reliable and
reasonably accessible.

         2.17 "Stock Purchase Opportunity" means an opportunity to purchase
Stock of the Corporation as set forth in Section 8 hereof.

3.       ADMINISTRATION

         The Plan shall be administered under the supervision of a Committee
composed of not less than three individuals selected by the Board. Members of
the Committee shall serve at the pleasure of the Board, and may resign by
written notice filed with the Chief Executive Officer or the Secretary of the
Corporation.

         A vacancy in the membership of the Committee shall be filled by the
appointment of a successor member by the Board. Until such vacancy is filled,
the remaining members shall constitute a quorum and the action at any meeting of
a majority of the entire Committee, or an action unanimously approved in
writing, shall constitute action of the Committee. Subject to the express
provisions of this Plan, the Committee shall have conclusive authority to
construe and interpret the Plan, any Award Agreement entered into hereunder and
to establish, amend and rescind Administrative Policies for the administration
of this Plan and shall have such additional authority as the Board may from time
to time determine to be necessary or desirable.

4.       ELIGIBILITY

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         Any Key Employee or Director of the Corporation is eligible to become a
Participant in the Plan.

5.       SHARES AVAILABLE

         Shares of Stock available for issuance under the Plan may be authorized
and unissued shares or treasury shares. The maximum number of shares of Stock
available for grant of Awards under the Plan of Stock Purchase Opportunities
shall be equal to the aggregate of the Stock Purchase Opportunities granted to
each Participant determined in accordance with Section 8(b) of this Plan.

6.       TERM

         The Plan shall become effective as of December 28, 1999 and shall
continue in effect until terminated by the Board, at which time all outstanding
Awards shall remain outstanding in accordance with their applicable terms and
conditions.

7.       PARTICIPATION

         The Committee shall select Participants from those Key Employees and
Directors of the Corporation who, in the opinion of the Committee, can further
the Plan's purposes and the Committee shall determine the type or types of
Awards to be made to the Participant. The terms, conditions, and restrictions of
each Award shall be set forth in an Award Agreement.

8.       STOCK PURCHASE OPPORTUNITIES

         (a) Grants. Awards may be granted in the form of Stock Purchase
Opportunities. Stock Purchase Opportunities shall represent the right of a
Participant to acquire Stock of the Corporation, which right shall expire on
December 28, 1999 (the "Acceptance Date"). The Stock to be acquired will be sold
by the Corporation to the Participant and may represent Treasury shares of the
Corporation or shares acquired by the Corporation on the open market.

         (b) Terms and Conditions of Stock Purchase Opportunities The maximum
amount of a Stock Purchase Opportunity that may be granted to a Participant
shall be equal to that amount of Stock of the Corporation having a fair market
value equal to (i) in the case of a Participant who is a Key Employee, 200% of
the base salary of such Participant and (ii) in the case of a Participant who is
a Director, 400% of the annual retainer of such Director. A Stock Purchase
Opportunity shall be exercisable by the Participant only on the Acceptance Date.
The exercise price of such Stock Purchase Opportunity shall be equal to the
average of the closing prices for the Corporation's Stock for the 20 business
days preceding the Acceptance Date. A Participant shall inform the Corporation
on the Acceptance Date whether, and to what extent, the Participant will
purchase Stock under the Stock Purchase Opportunity.

         (c) Loans Relating to Stock Purchase Opportunities. If a Participant
shall decide to incur a loan to acquire Stock under the Stock Purchase
Opportunity, and if such loan shall be provided by National City Bank (or any
affiliate thereof), the Corporation shall guarantee such loan. The terms of such
loan shall be determined by the Participant and the lender. The Corporation
shall loan to the Participant sufficient amounts to pay any interest accruing on
the loan during the first five years of the loan ("Interest Loans"). Such
Interest Loans shall accrue interest at the "applicable federal rate" as
established under the Code and the principal amount of the Interest Loan (plus
all accrued interest) shall be due and payable by the Participant five years
from the Acceptance Date.

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         (d) Long-Term Incentive Award.

                  (i) The Corporation shall make a Long-Term Incentive Award
("LTI Award") to any Participant who exercises a Stock Purchase Opportunity. The
LTI Award shall be equal to the value of the Stock acquired by the Participant
under the Stock Purchase Opportunity, plus the amount of any Interest Loan
(including, for this purpose, any accrued interest on the Interest Loan). In the
event that a Participant acquires Stock under the Stock Purchase Opportunity but
does not incur a loan in connection therewith, the amount of the LTI Award shall
be equal to the value of the Stock acquired by the Participant under the Stock
Purchase Opportunity, plus the amount of interest that would have been incurred
by such Participant had a loan been incurred for such acquisition (assuming for
this purpose that the interest rate on any such loan would have been at the
Prime Rate established from time to time by National City Bank). In all cases
where interest is taken into account for purposes of an LTI Award, such interest
shall be calculated through the date that the LTI Award is paid.

                  (ii) The LTI Award shall be payable in cash (if the Stock
price targets set forth herein are achieved), shall be subject to all applicable
withholding, and shall be used first by the Participant to repay any National
City Bank loan that is guaranteed by the Corporation, and then to reduce the
balance of any Interest Loan (unless the Participant shall have otherwise
arranged to repay such loans). To the extent the LTI Award exceeds the principal
and any accrued interest on such loans, the Participant shall be entitled to
retain such LTI Award.

                  (iii) The terms of the LTI Award shall provide that (i) no
payment shall be made pursuant to such Award during the two years following the
Award, (ii) one-third of the LTI Award shall be paid during the period
commencing 24 months after the Acceptance Date and ending 36 months after such
Date if the Stock price achieves an average of $20 for a twenty-business-day
period during such period, (iii) if the Stock price achieves an average of $24
for a twenty-business-day period during the period commencing 36 months after
the Acceptance Date and ending 48 months after such Date, either one-third of
the LTI Award shall be paid at such time (if a payment was made under clause
(ii) of this paragraph) or two-thirds of the LTI Award shall be paid at such
time (if a payment was not made under clause (ii) of this paragraph), and (iv)
if the Stock price achieves an average of $28 for a twenty-business-day period
during the period commencing 48 months after the Acceptance Date and ending 60
months after such Date, the full LTI Award shall be paid out to the Participant,
less any prior payments under clauses (ii) or (iii) of this paragraph. Any
payments of the LTI Award shall be made within 15 days after achievement of the
Stock price targets set forth herein.

         (e) Special Loans and Additional LTI Awards. In the event (i) a
Participant purchased Stock (other than pursuant to this Plan or the Long-Term
Incentive Plan) subsequent to August 11, 1999, and prior to the Acceptance Date,
and (ii) elects to have such purchase counted as a purchase of stock for
purposes of this subsection (e), the Corporation shall make an Additional LTI
Award to such Participant with respect to such prior purchase on terms and
conditions similar to those set forth in paragraph (d), provided that (i) such
Additional LTI Award will be made only to the extent such Participant otherwise
acquires Stock in connection with a Stock Purchase Opportunity granted
hereunder. and (ii) the aggregate of the values of the LTI Award and Additional
LTI Award granted to any Participant may not exceed the dollar limits set forth
in Section 8(b) of this Plan. The operation of this Section 8(e) shall be
illustrated by the following example. Assume the Participant acquired $60,000 of
Stock in September, 1999 at a price of $6 per share. Assume the Participant is
granted a Stock Purchase Opportunity with respect to $240,000 of Stock in
December, 1999. If the Participant acquires no shares under the Stock Purchase
Opportunity, he will be granted no LTI Award and no Additional LTI Award. If the
Participant acquires $30,000 of Stock under the Stock Purchase Opportunity, he
will be granted (i) an LTI Award with a value of $30,000, (ii) an Additional LTI
Award with a value of $30,000 and (iii) an interest factor with respect to the
$30,000 Additional LTI Award. If the Participant acquires $100,000 of Stock
under the Stock Purchase Opportunity, he will be granted (i) an LTI award with a
value of $100,000, (ii) an Additional LTI Award with a value of $60,000, and
(iii) an interest factor with respect to the $60,000

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Additional LTI Award. The interest factor with respect to an Additional LTI
Award shall be based on the prime rate established from time to time by National
City Bank.

         (f) Deferral of LTI Awards. In the event an LTI Award exceeds the
amount of Participant loans required to be repaid, or in the event the
Participant otherwise arranges for the repayment of such loans, the Participant
may elect to defer such LTI Award pursuant to the terms of the Corporation's
Deferred Compensation Plan for Employees and Directors.

9.       STOCK OPTIONS

         (a) Grants. Stock options under the Long-Term Incentive Plan will be
granted to any Participant who exercises a Stock Purchase Opportunity. Stock
options will be non-statutory stock options (i.e., stock options that are not
incentive stock options under section 422 of the Code). The amount of Stock
covered by such stock options will be equal to one-half of the number of shares
acquired by the Participant pursuant to the Stock Purchase Opportunity (or
acquired otherwise by the Participant subsequent to August 11, 1999 to the
extent such shares are taken into account in determining an Additional LTI Award
under Section 8(e)), provided that no more than 175,000 shares of Stock shall be
subject to options granted in connection with this Section 9(a). In the event
that application of the "one-half formula" would result in more than 175,000
shares being subject to options hereunder, the number of options shall be
reduced pro-rata for all Participants. Such options shall be granted
simultaneously with the purchase of shares pursuant to the Opportunity.

         (b) Terms and Conditions of Options. An option granted under paragraph
(a) shall be exercisable to the extent of 40% of the number of covered shares
after two years from the grant of such option; 60% after three years from the
date of such grant; 80% after four years from the date of such grant; and 100%
after five years from the date of such grant; provided, however, that no stock
option shall be exercisable more than ten years after the date of grant thereof.
The option exercise price shall be established by the Committee, and shall be
equal to the greater of the price paid by the Participant for the Stock pursuant
to the Stock Purchase Opportunity or the closing price of the Stock on the
Acceptance Date.

         (c) Cancellation of Option. In the event a Participant sells any Stock
that was acquired upon exercise of a Stock Purchase Opportunity before holding
such Stock for five years, the Corporation shall cancel a pro-rata portion (as
provided in the subsequent sentence) of any vested or unvested stock option
granted pursuant to this Section. The number of shares as to which such option
shall be cancelled shall equal one-half of the number of shares of Stock sold by
the Participant (or, in the event a pro-ration of options was required under
Section 9(a), such lesser number as would be appropriate to reflect such
pro-ration in the determination of the Committee).

         (d) Additional Terms and Conditions. The Committee may establish such
other terms, conditions, restrictions and/or limitations, if any, on any stock
option, provided they are not inconsistent with the Plan or the Long-Term
Incentive Plan.

10.      TERMINATION OF EMPLOYMENT

         If a Participant ceases employment with (or ceases to render services
as a director to) the Corporation on account of the Participant's death, the LTI
Award (which, for purposes of this section, shall include any Additional LTI

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Award) shall continue in effect and any amounts that subsequently become payable
thereunder shall be paid to the beneficiary designated by the Participant.

         If a Participant ceases employment with (or ceases to render services
as a director to) the Corporation for any reason other than death, all rights to
any LTI Award awarded to such Participant shall terminate, the Corporation's
guarantee of any loans related to such Participant described in Section 8(c) (or
Section 8(e)) shall terminate, and the Interest Loans to such Participant
described in Section 8(d) (or Section 8(e)) shall be immediately due and payable
by the Participant.

11.      ASSIGNMENT AND TRANSFER

         The rights and interests of a Participant under the Plan may not be
assigned, encumbered or transferred except, in the event of the death of a
Participant, by will or the laws of descent and distribution.

12.      WITHHOLDING TAXES

         The Corporation shall be entitled to deduct from any payment under the
Plan, regardless of the form of such payment, the amount of all applicable
income and employment tax required by law to be withheld with respect to such
payment or may require the Participant to pay to it such tax prior to and as a
condition of the making of such payment. In accordance with any applicable
Administrative Policies it establishes, the Committee may allow a Participant to
pay the amount of taxes required by law to be withheld from an Award by
withholding from any payment of Stock due as a result of such Award, or by
permitting the Participant to deliver to the Corporation shares of Stock having
a fair market value, as determined by the Committee, equal to the amount of such
required withholding taxes.

13.      REGULATORY APPROVALS AND LISTINGS

         Notwithstanding anything contained in this Plan to the contrary, the
Corporation shall have no obligation to issue or deliver certificates of Stock
pursuant to any stock option or Stock Purchase Opportunity prior to (a) the
obtaining of any approval from any governmental agency which the Corporation
shall, in its sole discretion, determine to be necessary or advisable, (b) the
admission of such shares to listing on the Stock Exchange and (c) the completion
of any registration or other qualification of said shares under any state or
federal law or ruling of any governmental body which the Corporation shall, in
its sole discretion, determine to be necessary or advisable.

14.      NO RIGHT TO CONTINUED EMPLOYMENT OR GRANTS

         Participation in the Plan shall not give any Key Employee any right to
remain in the employ of the Corporation. The Corporation reserves the right to
terminate the employment of any Key Employee at any time. The adoption of this
Plan shall not be deemed to give any Key Employee or any other individual any
right to be selected as a Participant, to be granted any Awards hereunder or if
granted an Award in any year, to receive Awards in any subsequent year.

15.      AMENDMENT

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         The Committee may suspend or terminate the Plan at any time. In
addition, the Committee may, from time to time, amend the Plan in any manner,
provided that no such amendment shall adversely affect any outstanding Award

16.      GOVERNING LAW

         The Plan shall be governed by and construed in accordance with the laws
of the State of Ohio, except as preempted by applicable Federal law.

17.      CHANGE IN CONTROL

         In the event of a Change In Control, all restrictions and conditions,
if any, previously established with respect to LTI Awards and Additional LTI
Awards will conclusively be deemed to have been satisfied and fulfilled and
Participants shall be entitled to receive cash payments in the full amount of
such Awards (subject to applicable withholding) pursuant to the procedures set
forth in Section 8(d).

18.      NO RIGHT, TITLE, OR INTEREST IN CORPORATION ASSETS

         To the extent any person acquires a right to receive payments from the
Corporation under this Plan, such rights shall be no greater than the rights of
an unsecured creditor of the Corporation.

19.      TREATMENT OF DIVIDENDS

         To the extent any dividends are paid to a Participant in connection
with Stock acquired pursuant to a Stock Purchase Opportunity (or in connection
with Stock acquired pursuant to a stock option granted under Section 9 hereof),
the Participant shall be obligated to use such dividends to repay any loans that
the Corporation has guaranteed pursuant to Section 8(c) hereof. In the event the
Participant fails to make such repayment, the Corporation shall be entitled to
take appropriate steps including, but not limited to, withholding an equivalent
amount from the Participant's salary or retainer payments and utilizing such
amounts to repay the Participant's loans or any Interest Loans.

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