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                                                                    EXHIBIT 10.8

                                   AGREEMENT

     AGREEMENT entered into as of this 9th day of March, 1999 between Kingstone
Family Limited Partnership II, a Nevada limited partnership ("Seller") and
Hayward Industries, Inc. ("Hayward").

                             W I T N E S S E T H:
                             - - - - - - - - - -

     WHEREAS, Super Vision International, Inc. (the "Corporation") and Hayward
entered into a Stock Purchase Agreement dated as of September 25, 1996 (the
"Stock Purchase Agreement") whereunder, among other things, Hayward agreed to
purchase 249,480 shares of the Corporation's class A common stock, $.001 par
value (the "Class A Common Stock"), and, through its wholly-owned subsidiary
Hayward Pool Products, Inc., to enter into certain distributorship arrangements
with the Corporation; and

     WHEREAS, in connection with the transactions contemplated under the Stock
Purchase Agreement, Brett M. Kingstone ("Kingstone") and Hayward entered into an
Option Agreement dated September 25, 1996 (the "Option Agreement") whereunder,
under the terms and conditions contained therein, Kingstone granted to Hayward
an option to purchase up to ten (10%) percent of Kingstone's Escrow Shares (as
defined under the Escrow Agreement dated as of January 21, 1994 [the "Escrow
Agreement"] among the Corporation, American Stock Transfer & Trust Company,
Kingstone and other stockholders of the Corporation); and

     WHEREAS, in March 1997, Kingstone delivered his Escrow Shares to the
Corporation for cancellation and, in connection therewith, the Corporation and
Kingstone entered into a Warrant Agreement dated March 31, 1997 (the "Warrant")
whereunder, under the terms and conditions contained therein, the Corporation
granted to Kingstone the right and option to purchase up to 289,187 shares of
the Class A Common Stock (the "Warrant Shares") at an exercise price of $7.00
per share; and

     WHEREAS, on June 30, 1998 and for estate planning purposes, Kingstone
transferred the Warrant to the Seller, a family limited partnership; and

     WHEREAS, in connection with the cancellation of Kingstone's Escrow Shares,
the Corporation, Hayward and Kingstone have agreed to terminate the Option
Agreement and to enter into this Agreement;

     NOW, THEREFORE, in consideration of the foregoing and the mutual promises
and covenants herein contained, it is hereby agreed as follows:

     1.  Termination of Option Agreement. As of the date hereof, the Option
         -------------------------------
Agreement is hereby terminated and, as of the date hereof, all of the terms and
conditions shall no longer be in full force and effect.
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     2.  Grant of Option. In connection with the execution and delivery of the
         ---------------
Stock Purchase Agreement, and in exchange for payment by Hayward to the Seller
of the amount of $1.00 and other good and valuable consideration (the receipt
and sufficiency of which is hereby acknowledged by the Seller), the Seller
hereby grants to Hayward, or its designated affiliate, an option with respect
to a portion of the Warrant Shares pursuant to the terms hereinafter set forth:

     (a) In each event of the exercise of the Warrant by the Seller (an
"Exercise") the Seller shall immediately notify Hayward thereof, specifying the
number of Warrant Shares subject to such Exercise, whereupon Hayward shall have
the right and option, exercisable at any time prior to 45 days from and after
such Exercise (each, a "Termination Date"), to purchase ten (10%) percent of the
Warrant Shares issued to the Seller upon such Exercise, which in no event shall
exceed up to a total of 28,918 of the Warrant Shares at any time under this
Agreement (such Warrant Shares, in each case the "Option Shares"), at a purchase
price calculated as hereinafter set forth (the "Purchase Price"). Any right of
Hayward to purchase such Options Shares shall expire upon the applicable
Termination Date and such shares shall no longer be deemed Option Shares for
purposes of this Agreement.

     (b) The Purchase Price shall in each instance be calculated by the Seller
and Hayward as the fair market value of the relevant Option Shares, with each
share of Class A Common Stock included therein valued with reference to the
Market Price for 30 consecutive business days prior to the date of the Exercise
Notice (as hereinafter defined), appropriately modified by the parties to
reflect any stock splits, stock dividends, reclassifications, or similar events;
and should the Seller and Hayward fail promptly to agree as aforesaid, by an
appraiser independent of the Seller, Hayward or the Corporation, qualified in
such matters, upon whom the Seller and Hayward shall promptly agree. For
purposes of this Subparagraph (b), the term "Market Price" shall mean: (i) the
average closing sale price for 30 consecutive business days (or such other
period as Hayward may consent to), ending the date prior to the date of the
Exercise Notice, of the Class A Common Stock as reported by the Nasdaq National
Market System, if the Class A Common Stock is so reported, or (ii) if not so
reported, the average last reported sale price for 30 consecutive business days
(or such other period as Hayward may consent to), ending the date prior to the
date of the Exercise Notice of the Class A Common Stock on the primary exchange
on which the Class A Common Stock is traded, if the Class A Common Stock is
traded on a national securities exchange, or (iii) if not so reported or traded,
the average of the last reported bid and asked prices of the Class A Common
Stock for 30 consecutive business days (or such other period as Hayward may
consent to), ending the date prior to the date of the Exercise Notice, of the
Class A Common Stock, as reported by the Nasdaq SmallCap Market or other
automated quotation system of a registered national securities association, or
(iv) if not so


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reported or traded, as determined by the Board of Directors of the Corporation
in its reasonable discretion.

     3.  Exercise of Option.  Hayward shall, at its election, in each case
         -------------------
exercise the foregoing right and option by giving written notice to the Seller
(each, an "Exercise Notice") specifying the time and date, no earlier than five
nor later than 15 days after the delivery of such notice to the Seller (the
"Closing Date"), at which payment of the Purchase Price for the Option Shares
will be made, at the offices of Messrs. Greenberg Traurig, P.A., 20th Floor,
111 North Orange Avenue, Orlando, Florida 32801, by delivery to the Seller of
such Purchase Price by certified or bank cashiers' check or wire transfer,
against delivery of certificates for the Option Shares, duly endorsed in blank
by the Seller (each such certificate accompanied by any requisite documentary or
stock transfer tax stamps), or other documentation in form and substance
satisfactory to Hayward and effective to transfer the Option Shares to Hayward.
Subject to the terms and conditions hereof, Hayward hereby agrees to purchase
such Option Shares from the Seller and Seller hereby agrees to sell such Option
Shares to Hayward, in each event that Hayward delivers such Exercise Notice to
the Seller as aforesaid.

     4.  Registration of Shares.  In each event of exercise of the foregoing
         -----------------------
right and option, and of the transfer of any Option Shares as aforesaid, the
Corporation shall, as promptly as practicable subsequent to the Closing Date and
in no event later than twelve months from such date, register such Option Shares
as shall form part of a class of securities of the Corporation then registered
under the Securities Exchange Act of 1934, at the Corporation's expense,
pursuant to the Securities Act of 1933, as amended (the "Securities Act"). The
foregoing registration shall be effectuated by the Corporation pursuant to the
terms of the Registration Rights Agreement (as defined in the Stock Purchase
Agreement). Hayward, the Seller and the Corporation hereby agree that the Option
Shares referenced in the Registration Rights Agreement shall refer to the Option
Shares as defined in this Agreement.

     5.  Representations and Warranties and Agreements of the Seller.  The
         ------------------------------------------------------------
Seller hereby represents and warrants to, and agrees with Hayward, as follows:

     (a) The Seller has full and unrestricted power and authority to enter into
this agreement and to perform all of its covenants and agreement hereunder. When
executed and delivered by it, the terms hereof shall constitute its valid and
legally binding agreement enforceable against it in accordance with its terms,
except as may be limited by bankruptcy, insolvency or other laws affecting
generally the enforceability of creditors rights and by limitations on the
availability of equitable remedies.

     (b)  The Seller has the right to sell and transfer all Option Shares to
Hayward hereunder upon the exercise, if ever, of the

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<PAGE>

Warrant. Hayward shall, upon delivery of any Option Shares in accordance with
this agreement, hold good and marketable title thereto, free and clear of any
lien, security interest, voting trust or other claim, charge or encumbrance.

     (c) Neither the execution and delivery hereof, nor the consummation of any
or all of the transactions contemplated herein, will violate any law, rule,
regulation, writ, judgment, injunction, decree, determination, award or other
order of any court or governmental agency, or conflict with or result in any
breach of or constitute a default under, or result in the creation or imposition
of any mortgage, deed of trust, pledge, lien, security interest or other charge
or encumbrance of any nature pursuant to the terms of, any contract or agreement
to which it is a party or by which it or any of its assets is bound.

     (d) Neither the Seller nor anyone acting on behalf of the Seller has
directly or indirectly offered any securities for sale to, or solicited any
offer to buy any of the same from, anyone so as to bring the delivery and sale
of the Option Shares hereunder within the registration requirements of the
Securities Act.

     (e) The representations and warranties contained in this Section 5 shall be
true and correct on and as of each Closing Date with the same effect as if made
on and as of such date and such representations and warranties shall survive
each Closing Date notwithstanding any investigation made by or on behalf of
Hayward; and the Seller shall, on each Closing Date, deliver its certificate to
Hayward to the foregoing effect in form and substance satisfactory to Hayward.

     6. Representations and Warranties of Hayward. Hayward hereby represents
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and warrants to, and agrees with the Seller, as follows:

     (a) It is a corporation duly organized and validly existing under the laws
of the State of New Jersey and has the full corporate power and authority to
enter into the agreements contained herein, to acquire the Option Shares elected
by it, and to carry out the provisions hereof.

     (b) The execution and delivery hereof by it and the performance by it of
its covenants and agreements hereunder have been duly authorized by all
necessary corporate action. When executed and delivered by it the terms hereof
shall constitute Hayward's valid and legally binding obligation enforceable
against it in accordance therewith, except as may be limited by bankruptcy,
insolvency or other laws affecting generally the enforceability of creditors'
rights and by limitations on the availability of equitable remedies.

     (c) Neither the execution and delivery hereof, nor the consummation of the
transactions contemplated herein, will violate any provision of its certificate
of incorporation or by-laws, or any law, rule, regulation, writ, judgment,
injunction, decree,


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determination, award or other order of any court or governmental agency, or
conflict with or result in any breach of any of the terms of or constitute a
default under, or result in the creation or imposition of any mortgage, deed of
trust, pledge, lien, security interest or other charge or encumbrance of any
nature pursuant to the terms of any contract or agreement to which it is a party
or by which it or any of its assets is bound.

     (d) Except as otherwise permitted by applicable law (without limitation,
including in the exercise of any rights contemplated by Section 4 hereof),
Hayward will acquire the Option Shares purchased by it hereunder for its own
account and not with a view to, or for sale in connection with, the distribution
thereof within the meaning of the Securities Act.

     (e) The representations and warranties contained in this Section 6 shall be
true and correct on and as of each Closing Date with the same effect as if made
on and as of such date, and such representations and warranties shall survive
each Closing Date notwithstanding any investigation made by or on behalf of the
Seller; and Hayward shall, on each Closing Date, deliver its certificate to the
Seller to the foregoing effect in form and substance satisfactory to the Seller.

     7. Right-of-First Refusal.
        ----------------------

     (a) In addition to the right and option hereinabove set forth, the Seller
and Kingstone both agree that, in the event either the Seller or Kingstone
shall, from time to time, determine to sell any securities of the Corporation
owned by it or him, pursuant to a bona fide offer (the "Bona Fide Offer"), to
any Hayward Competitor (as defined in the Purchase Agreement), and provided that
no Change in Control (as hereinafter defined) in respect of Hayward shall have
occurred subsequent to the date hereof, the Seller or Kingstone shall, in each
instance, first offer such shares (the "Offered Shares") to Hayward, by written
notice (each an "Initial Sale Notice") to Hayward to that effect. Hayward shall
have the right and option to purchase all, but not less than all, securities
specified in the Initial Sale Notice by giving written notice of exercise (an
"Acceptance Notice") to the Seller or Kingstone within ten days after the
receipt of the Initial Sale Notice for a purchase price calculated as
hereinafter set forth. Failure to respond within such period shall conclusively
be deemed notice of rejection. In the event Hayward shall not timely have
exercised any right and option under this Section 7, the Seller or Kingstone
shall be free, for a period of sixty days after the expiration of such right and
option, to sell all, but not less than all, securities to which such right and
option related pursuant to the Bona Fide Offer theretofore communicated to
Hayward, free of the restrictions of this Section 7. In the event that Hayward
duly delivers an Acceptance Notice to the Seller or Kingstone, then the
Acceptance Notice, taken in conjunction with the Initial Sale Notice, shall
constitute a valid and legally binding purchase and sale agreement, and payment
in cash for the Offered Shares

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purchased be made within ten days following the receipt by the Seller or
Kingstone of the Acceptance Notice. In the event the Seller or Kingstone fails
to complete the proposed sale, assignment, transfer or other disposition within
60 days after the rejection or deemed rejection of the offer contained in the
Initial Sale Notice, sale of the Offered Shares shall again be subject to the
provisions of this Section 7. Hayward, the Seller and the Corporation hereby
agree that any Offered Shares purchased by Hayward pursuant to this Section 7
shall be deemed to be Option Shares under the Registration Rights Agreement.

     (b) The purchase price for each security offered to Hayward pursuant to
this Section 7 shall be the dollar value of the consideration per security
offered to the Seller or Kingstone pursuant to the Bona Fide Offer, which, in
the case of any non-cash consideration, shall be the fair market value thereof
determined by the Seller or Kingstone and Hayward or should the Seller,
Kingstone and Hayward fail to agree thereon within three days of receipt by
Hayward of the Initial Sale Notice, the purchase price shall be determined by an
independent appraiser, qualified in such matters selected by the Seller,
Kingstone and Hayward.

     (c) The provisions of this Section 7 shall be binding upon any Affiliate of
either the Seller, Kingstone or any member of his Immediate Family (as
hereinafter defined), to whom the Seller may transfer any securities of the
Corporation after the date hereof, who shall agree in writing to be bound as
aforesaid as a condition to any such transfer.

     (d) For purposes of this Section 7: (x) an "Affiliate" of any person or
entity shall mean any other person or entity controlled by, under common control
with or controlling such person or entity; (y) "Immediate Family" shall mean the
spouse, siblings, children (and the direct lineal descendants of such children)
and parents (and the direct lineal ancestors of such parents) of the subject
person, and any trust for the benefit thereof; and (z) "Change in Control" shall
mean a change in control of Hayward occurring after the date of execution of
this Agreement of a nature that would be required to be reported in response to
Item 6(e) of Schedule 14A of Regulation 14A (or in response to any similar item
on any similar schedule or form) promulgated under the Securities Exchange Act
of 1934 (the "Exchange Act"), whether or not Hayward is then subject to such
reporting requirement; provided, however, that, without limitation, such a
Change in Control shall be deemed to have occurred if any "person" (as defined
under Section 13(d) of the Exchange Act) subsequent to the date hereof becomes
the "beneficial owner" (as defined in Rule 13d-3 under the Exchange Act),
directly or indirectly, of more that 50% of the outstanding shares of any class
or series of securities entitled to elect more than one-half of the board of
directors of Hayward.

     8. Certain Covenants. The Seller and Kingstone hereby covenants and agree
        -----------------
that, except as consented in writing by Hayward, from and after the date of this
Agreement, it or he shall:

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     (a) not sell, transfer or in any way convey, or agree to sell, transfer or
in any way convey, any of the Option Shares or grant, or agree to grant, an
option or other right to acquire any of the Option Shares, except pursuant to
this Agreement;

     (b) not suffer or permit any pledge, lien, security interest or other
charge or encumbrance of any nature to be created with respect to the Option
Shares, nor shall such Option Shares be subject to any voting agreements or to
any proxies, except for this Agreement or as expressly permitted or required by
this Agreement;

     (c) take such action so that all shares of capital stock of the Corporation
legally or beneficially owned by it or him shall be voted to effectuate the
election to the Board of Directors of the Corporation of the designee
contemplated by Section 8.3 of the Stock Purchase Agreement and against any
proposal inconsistent therewith; and

     (d) use its or his best efforts to cooperate with Hayward in effectuating
the purposes of the Agreement and to consummate the transactions contemplated
hereby.

     9. Notices. Any notice pursuant to the terms hereof shall be deemed to have
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been sufficiently given to either party hereto if sent by registered, certified
or overnight express mail, postage prepaid, addressed, as the case may be, as
follows:

        (1) if to the Seller or Kingstone:

            8210 Presidents Drive
            Orlando, Florida 32809

            with a copy to:

            Frank Ioppolo, Esq.
            Greenberg Traurig
            111 North Orange Avenue
            20th Floor
            Orlando, Florida  32801

        (2) if to Hayward:

            620 Division street
            Elizabeth, New Jersey 07207

            with a copy to:

            Robert I. Wexler, Esq.
            Krugman & Kailes LLP
            Park 80 West - Plaza Two
            Saddle Brook, New Jersey 07663

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<PAGE>

Any of the above addresses may be changed at any time by notice given above;
provided, however, that any such notice of change of address shall be effective
only upon receipt. Unless otherwise provided herein, all notices shall be deemed
to have been given when sent.

     10. Successors. Hayward may not assign its rights under this Agreement
         ----------
without the prior written consent of the Seller having first been obtained
(except that Hayward may assign its rights hereunder without such consent to any
wholly-owned subsidiary of Hayward). The terms, covenants and conditions hereof
shall inure to the benefit of and be binding upon the parties hereto and their
respective heirs, legal representatives, successors and assigns.

     11. Expenses. Except as otherwise provided herein, each of the parties
         --------
hereto shall bear such party's own expenses in connection with this Agreement
and the transactions contemplated hereby.

     12. Governing Law. This agreement and the terms hereof shall be governed by
         -------------
and construed in accordance with the laws of the Sate of New Jersey applicable
to agreements made and to be performed entirely within such state.

     13. Counterparts. This agreement may be signed in one or more counterparts,
         ------------
each of which shall be deemed to be an original, but all of which taken together
shall constitute one agreement.

     14. Entire Agreement. This agreement constitutes the entire agreement of
         ----------------
the parties with respect to the matters herein referred and supersedes all prior
agreements and understandings, written and oral, between the parties with
respect to the subject matter hereof. Neither this agreement nor any terms
hereof may be changed, waived or terminated orally, but only by an instrument in
writing signed by the party against which enforcement of the change, waiver or
termination is sought.

     IN WITNESS WHEREOF, the parties have executed this agreement as of the date
first written above.


                                   HAYWARD INDUSTRIES, INC.


                                   By  /s/ James D. Krugman
                                       ---------------------------------------
                                       James D. Krugman
                                       President

                                   KINGSTONE FAMILY LIMITED PARTNERSHIP II



                                   By  /s/ Brett M. Kingstone
                                       ---------------------------------------
                                       Brett M. Kingstone
                                       General Partner

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<PAGE>

     The undersigned hereby executes this agreement solely so as to agree to
Section 1 hereinabove set forth and to be bound by the provisions of Sections 4
and 7 hereinabove set forth.

SUPER VISION INTERNATIONAL, INC.


By /s/ John P. Stanney
  ------------------------------
  John P. Stanney
  President

     The undersigned hereby executes this agreement solely as to agree to
Section 1 hereinabove set forth and to be bound by the provisions of Sections 7
and 8 hereinabove set forth.


                                          /s/ Brett M. Kingstone
                                          -----------------------------
                                          Brett M. Kingstone

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