<PAGE>   1
                                                                    EXHIBIT 10.8



                                 PROMISSORY NOTE

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------------------------------------------
    PRINCIPAL       LOAN DATE      MATURITY       LOAN NO.     CALL    COLLATERAL    ACCOUNT    OFFICER   INITIALS
<S>                 <C>           <C>            <C>           <C>     <C>           <C>        <C>      <C>
  $519,128,000      04-03-1998    04-10-2003     04-0019-27     154        1E                     KGF
--------------------------------------------------------------------------------------------------------------------
References in the shaded area are for Lender's use only and do not limit the applicability of this document to
any particular loan or item.
--------------------------------------------------------------------------------------------------------------------

Borrower:         FIVE LINE, INC.   Lender:                            BARNES BANKING COMPANY
                  DBA UTAH INDOOR SOCCER                               33 SOUTH MAIN STREET
                  CENTER (TIN: 87-0525805)                             KAYSVILLE, UT 81037
                  2250 SOUTH 850 WEST
                  WOODS CROSS, UT 81087


--------------------------------------------------------------------------------------------------------------------
Principal Amount: $519,128.00                   Initial Rate: 10.500%                 Date of Note: April 3, 1998
</TABLE>

PROMISE TO PAY. FIVE LINE, INC. DBA UTAH INDOOR SOCCER CENTER ("Borrower")
promises to pay to BARNES BANKING COMPANY ("Lender"), or order, In lawful money
of the United States of America, the principal amount of Five Hundred Nineteen
Thousand One Hundred Twenty Eight & 00/100 Dollars ($519,128.00), together with
interest on the unpaid principal balance from April 3, 1998, until paid in full.
The Interest rate will not increase above 18.000%.

PAYMENT. Subject to any payment changes resulting from changes in the Index,
Borrower will pay this loan on demand, or if no demand is made, in 59 regular
payments of $5,752.96 each and one irregular last payment estimated at
$431,887.56. Borrower's first payment is due May 10, 1998, and all subsequent
payments are due on the same day of each month after that. Borrower's final
payment due April 10, 2003, will be for all principal and all accrued interest
not yet paid. Payments include principal and interest. Interest on this Note is
computed on a 365/365 simple interest basis; that is, by applying the ratio of
the annual interest rate over the number of days in a year, multiplied by the
outstanding principal balance, multiplied by the actual number of days the
principal balance is outstanding. Borrower will pay Lender at Lender's address
shown above or at such other place as Lender may designate in writing. Unless
otherwise agreed or required by applicable law, payments will be applied first
to any unpaid collection costs and any late charges, then to any unpaid
interest, and any remaining amount to principal.

VARIABLE INTEREST RATE. The interest rate on this Note is subject to change from
time to time based on changes in an independent index which is the THE NEW YORK
PRIME RATE ADVERTISED IN THE WALL STREET JOURNAL (the "Index"). The Index is not
necessarily the lowest rate charged by Lender on its loans. If the Index becomes
unavailable during the term of this loan, Lender may designate a substitute
index after notice to Borrower. Lender will tell Borrower the current Index rate
upon Borrower's request. Borrower understands that Lender may make loans based
on other rates as well. The interest rate change will not occur more often than
each FIRST DAY OF THE MONTH. The Index currently is 8.500% per annum. The
Interest rate to be applied to the unpaid principal balance of this Note will be
at a rate of 2.000 percentage points over the Index, adjusted if necessary for
the minimum and maximum rate limitations described below, resulting in an
Initial rate of 10.500% per annum. Notwithstanding any other provision of this
Note, the variable Interest rate or rates provided for in this Note will be
subject to the following minimum and maximum rates. NOTICE: Under no
circumstances will the interest rate on this Note be less than 5.000% per annum
or more than the lesser of 18.000% per annum or the maximum rate allowed by
applicable law. Unless waived by Lender, any increase in the interest rate will
increase the amount of Borrower's final payment.

PREPAYMENT. Borrower agrees that all loan fees and other prepaid finance charges
are earned fully as of the date of the loan and will not be subject to refund
upon early payment (whether voluntary or as a result of default), except as
otherwise required by law. Except for the foregoing, Borrower may pay without
penalty all or a portion of the amount owed earlier than it is due. Early
payments will not, unless agreed to by Lender in writing, relieve Borrower of
Borrower's obligation to continue to make payments under the payment schedule.
Rather, they will reduce the principal balance due and may result in Borrower
making fewer payments.

LATE CHARGE. If a payment is 10 days or more late, Borrower will be charged
5.000% of the unpaid portion of the regularly scheduled payment or $15.00,
whichever is greater.



<PAGE>   2
DEFAULT. Borrower will be in default if any of the following happens: (a)
Borrower fails to make any payment when due. (b) Borrower breaks any promise
Borrower has made to Lender, or Borrower fails to comply with or to perform when
due any other term, obligation, covenant, or condition contained in this Note or
any agreement related to this Note, or in any other agreement or loan Borrower
has with Lender. (c) Borrower defaults under any loan, extension of credit,
security agreement, purchase or sales agreement, or any other agreement, in
favor of any other creditor or person that may materially affect any of
Borrower's property or Borrower's ability to repay this Note or perform
Borrower's obligations under this Note or any of the Related Documents. (d) Any
representation or statement made or furnished to Lender by Borrower or on
Borrower's behalf is false or misleading in any material respect either now or
at the time made or furnished. (e) Borrower becomes insolvent, a receiver is
appointed for any part of Borrower's property, Borrower makes an assignment for
the benefit of creditors, or any proceeding is commenced either by Borrower or
against Borrower under any bankruptcy or insolvency laws. (f) Any creditor tries
to take any of Borrower's property on or in which Lender has a lien or security
interest. This includes a garnishment of any of Borrower's accounts with Lender.
(g) Any guarantor dies or any of the other events described in this default
section occurs with respect to any guarantor of this Note. (h) A material
adverse change occurs in Borrower's financial condition, or Lender believes the
prospect of payment or performance of the Indebtedness is impaired.

LENDER'S RIGHTS. Upon default, Lender may declare the entire unpaid principal
balance on this Note and all accrued unpaid interest immediately due, without
notice, and then Borrower will pay that amount. Lender may hire or pay someone
else to help collect this Note if Borrower does not pay. Borrower also will pay
Lender that amount. This includes, subject to any limits under applicable law,
Lender's reasonable attorneys' fees and Lender's legal expenses whether or not
there is a lawsuit, including reasonable attorneys' fees and legal expenses for
bankruptcy proceedings (including efforts to modify or vacate any automatic stay
or injunction), appeals, and any anticipated post-judgment collection services.
If not prohibited by applicable law, Borrower also will pay any court costs, in
addition to all other sums provided by law. This Note has been delivered to
Lender and accepted by Lender in the State of Utah. If there is a lawsuit,
Borrower agrees upon Lender's request to submit to the jurisdiction of the
courts of DAVIS County, the State of Utah. This Note shall be governed by and
construed in accordance with the laws of the State of Utah.

RIGHT OF SETOFF. Borrower grants to Lender a contractual security interest in,
and hereby assigns, conveys, delivers, pledges, and transfers to Lender all
Borrower's right, title and interest in and to. Borrower's accounts with Lender
(whether checking, savings, or some other account), including without limitation
all accounts held jointly with someone else and all accounts Borrower may open
in the future, excluding however all IRA and Keogh accounts, and all trust
accounts for which the grant of a security interest would be prohibited by law.
Borrower authorizes Lender, to the extent permitted by applicable law, to charge
or setoff all sums owing on this Note against any and all such accounts.

COLLATERAL. This Note is secured by A DEED OF TRUST IN THE AMOUNT OF $519,128.00
DATED APRIL 3, 1998, TO A TRUSTEE IN FAVOR OF LENDER ON REAL PROPERTY LOCATED IN
DAVIS COUNTY, STATE OF UTAH, ALL THE TERMS AND CONDITIONS OF WHICH ARE HEREBY
INCORPORATED AND MADE A PART OF THIS NOTE. PROPERTY IS LOCATED AT 2250 SOUTH 850
WEST, WOODS CROSS, UTAH 84087.

GENERAL PROVISIONS. This Note is payable on demand. The inclusion of specific
default provisions or rights of Lender shall not preclude Lender's right to
declare payment of this Note on its demand. Lender may delay or forgo enforcing
any of its rights or remedies under this Note without losing them. Borrower and
any other person who signs, guarantees or endorses this Note, to the extent
allowed by law, waive presentment, demand for payment, protest and notice of
dishonor. Upon any change in the terms of this Note, and unless otherwise
expressly stated in writing, no party who signs this Note, whether as maker,
guarantor, accommodation maker or endorser, shall be released from liability.
All such parties agree that Lender may renew or extend (repeatedly and for any
length of time) this loan, or release any party or guarantor or collateral; or
impair, fail to realize upon or perfect Lender's security interest in the
collateral; and take any other action deemed necessary by Lender without the
consent of or notice to anyone. All such parties also agree that Lender may
modify this loan without the consent of or notice to anyone other than the party
with whom the modification is made.



<PAGE>   3

PRIOR TO SIGNING THIS NOTE, BORROWER READ AND UNDERSTOOD ALL THE PROVISIONS OF
THIS NOTE, INCLUDING THE VARIABLE INTEREST RATE PROVISIONS. BORROWER AGREES TO
THE TERMS OF THE NOTE AND ACKNOWLEDGES RECEIPT OF A COMPLETED COPY OF THE NOTE.

BORROWER:

FIVE LINE, INC. DBA UTAH INDOOR SOCCER


BY:      /s/ GAYLEN JORGENSEN
   ----------------------------------------------
         GAYLEN JORGENSEN, PRESIDENT



<PAGE>   4





                               COMMERCIAL GUARANTY


<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------------------------
  PRINCIPAL      LOAN DATE     MATURITY      LOAN NO      CALL    COLLATERAL     ACCOUNT OFFICER     INITIALS
<S>             <C>           <C>            <C>          <C>     <C>            <C>                 <C>
                                                          154         1E               KGF
---------------------------------------------------------------------------------------------------------------
References in the shaded area are for Lender's use only and do not limit the
applicability of this document to any particular loan or item.
---------------------------------------------------------------------------------------------------------------

Borrower:         FIVE LINE, INC. DBA UTAH INDOOR                      Lender:  BARNES BANKING COMPANY
                  SOCCER CENTER (TIN: 87-0525805)                               33 SOUTH MAIN STREET
                  2250 SOUTH 850 WEST                                           KAYSVILLE, UT 84037
                  WOODS CROSS, UT 84087

Guarantor:        GAYLEN JORGENSEN
                  8961 SOUTH 2070 WEST
                  WEST JORDAN, UT 84088
</TABLE>

AMOUNT OF GUARANTY. This is a guaranty of payment of the Note, including without
limitation the principal Note amount of Five Hundred Nineteen Thousand One
Hundred Twenty Eight and 00/100 Dollars ($519,128.00).

GUARANTY. For good and valuable consideration, GAYLEN JORGENSEN ("Guarantor")
absolutely and unconditionally guarantees and promises to pay to BARNES BANKING
COMPANY ("Lender") or its order, on demand, in legal tender of the United States
of America, the indebtedness (as that term is defined below) of FIVE LINE, INC.
DBA UTAH INDOOR SOCCER CENTER ("Borrower") to Lender on the terms and conditions
set forth in this Guaranty.

DEFINITIONS. The following words shall have the following meanings when used in
this Guaranty:

         BORROWER. The word "Borrower" means FIVE LINE, INC. DBA UTAH INDOOR
         SOCCER CENTER.

         GUARANTOR. The word "Guarantor" means GAYLEN JORGENSEN.

         GUARANTY. The word "Guaranty" means this Guaranty made by Guarantor for
         the benefit of Lender dated April 3, 1998.

         INDEBTEDNESS. The word "Indebtedness" means the Note, including (a) all
         principal, (b) all interest, (c) all late charges, (d) all loan fees
         and loan charges, and (e) all collection costs and expenses relating to
         the Note or to any collateral for the Note. Collection costs and
         expenses include without limitation all of Lender's reasonable
         attorneys' fees and Lender's legal expenses, whether or not suit is
         instituted, and reasonable attorneys' fees and legal expenses for
         bankruptcy proceedings (including efforts to modify or vacate any
         automatic stay or injunction), appeals, and any anticipated
         post-judgment collection services.

         LENDER. The word "Lender" means BARNES BANKING COMPANY, its successors
         and assigns.

         NOTE. The word "Note" means the promissory note or credit agreement
         dated April 3, 1998, in the original principal amount of $519,128.00
         from Borrower to Lender, together with all renewals of, extensions of,
         modifications of, refinancings of, consolidations of, and substitutions
         for the promissory note or agreement.

         RELATED DOCUMENTS. The words "Related Documents" mean and include
         without limitation all promissory notes, credit agreements, loan
         agreements, environmental agreements, guaranties, security agreements,
         mortgages, deeds of trust, and all other instruments, agreements and
         documents, whether now or hereafter existing, executed in connection
         with the Indebtedness.

MAXIMUM LIABILITY. THE MAXIMUM LIABILITY OF GUARANTOR UNDER THIS GUARANTY SHALL
NOT EXCEED AT ANY ONE TIME THE AMOUNT OF THE INDEBTEDNESS DESCRIBED ABOVE, PLUS
ALL COSTS END EXPENSES OF (a) ENFORCEMENT OF THIS GUARANTY AND (b) COLLECTION
AND SALE OF ANY COLLATERAL SECURING THIS GUARANTY


<PAGE>   5



04-03-1998                      COMMERCIAL GUARANTY                     PAGE 2
LOAN NO. 04-00019-27                (CONTINUED)
--------------------------------------------------------------------------------

The above limitation on liability is not a restriction on the amount of the
Indebtedness of Borrower to Lender either in the aggregate or at any one time.
If Lender presently holds one or more guaranties, or hereafter receives
additional guaranties from Guarantor, the rights of Lender under all guaranties
shall be cumulative. This Guaranty shall not (unless specifically provided below
to the contrary) affect or invalidate any such other guaranties. The liability
of Guarantor will be the aggregate liability of Guarantor under the terms of
this Guaranty and any such other unterminated guaranties.

NATURE OF GUARANTY. Guarantor intends to guarantee at all times the performance
and prompt payment when due, whether at maturity or earlier by reason of
acceleration or otherwise, of all Indebtedness within the limits set forth in
the preceding section of this Guaranty.

DURATION OF GUARANTY. This Guaranty will take effect when received by Lender
without the necessity of any acceptance by Lender, or any notice to Guarantor or
to Borrower, and will continue in full force until all Indebtedness shall have
been fully and finally paid and satisfied and all other obligations of Guarantor
under this Guaranty shall have been performed in full. Release of any other
guarantor or termination of any other guaranty of the Indebtedness shall not
affect the liability of Guarantor under this Guaranty. A revocation received by
Lender from any one or more Guarantors shall not affect the liability of any
remaining Guarantors under this Guaranty.

GUARANTOR'S AUTHORIZATION TO LENDER. Guarantor authorizes Lender, without notice
or demand and without lessening Guarantor's liability under this Guaranty, from
time to time: (a) to make one or more additional secured or unsecured loans to
Borrower, to lease equipment or other goods to Borrower, or otherwise to extend
additional credit to Borrower; (b) to alter, compromise, renew, extend,
accelerate, or otherwise change one or more times the time for payment or other
terms of the Indebtedness or any part of the Indebtedness, including increases
and decreases of the rate of interest on the Indebtedness; extensions may be
repeated and may be for longer than the original loan term; (c) to take and hold
security for the payment of this Guaranty or the Indebtedness, and exchange
enforce, waive, subordinate, fail or decide not to perfect, and release any such
security, with or without the substitution of new collateral; (d) to release,
substitute, agree not to sue, or deal with any one or more of Borrower's
sureties, endorsers, or other guarantors on any terms or In any manner Lender
may choose; (e) to determine how, when and what application of payments and
credits shall be made on the Indebtedness; (f) to apply such security end direct
the order or manner of sale thereof, including without limitation, any
nonjudicial sale permitted by the terms of the controlling security agreement or
deed of trust, as Lender in its discretion may determine; (g) to sell, transfer,
assign, or grant participations in all or any part of the Indebtedness; and (h)
to assign or transfer this Guaranty in whole or in part.

GUARANTOR'S REPRESENTATIONS AND WARRANTIES. Guarantor represents and warrants to
Lender that (a) no representations or agreements of any kind have been made to
Guarantor which would limit or qualify in any way the terms of this Guaranty;
(b) this Guaranty is executed at Borrower's request and not at the request of
Lender; (c) Guarantor has full power, right and authority to enter into this
Guaranty; (d) the provisions of this Guaranty do not conflict with or result in
a default under any agreement or other instrument binding upon Guarantor and do
not result in a violation of any law, regulation, court decree or order
applicable to Guarantor; (e) Guarantor has not and will not, without the prior
written consent of Lender, sell, lease, assign, encumber, hypothecate, transfer,
or otherwise dispose of all or substantially all of Guarantor's assets, or any
interest therein; (f) upon Lender's request, Guarantor will provide to Lender
financial and credit information in form acceptable to Lender, and all such
financial information which currently has been, and all future financial
information which will be provided to Lender is and will be true and correct in
all material respects and fairly present the financial condition of Guarantor as
of the dates the financial information is provided; (g) no material adverse
change has occurred in Guaranty or when this Guaranty is executed by more than
one Guarantor, the words "Borrower" and "Guarantor" respectively shall mean all
and any one or more of them. The words "Guarantor," "Borrower," and "Lender"
include the heirs, successors, assigns, and transferees of each of them. Caption
headings in this Guaranty are for convenience purposes only and are not to be
used to interpret or define the provisions of this Guaranty. If a court of
competent jurisdiction finds any provision of this Guaranty to be invalid or
unenforceable as to any person or circumstance, such finding shall not render
that provision invalid or unenforceable as to any other persons or
circumstances, and all provisions of this Guaranty in all other respects shall
remain valid and enforceable. If any one or more of Borrower or Guarantor are
corporations or partnerships, it is not necessary for Lender to inquire into the
powers of Borrower or Guarantor or of the officers, directors, partners, or
agents acting or purporting to act on their behalf, and any

<PAGE>   6


04-03-1998                      COMMERCIAL GUARANTY                     PAGE 3
LOAN NO. 04-00019-27                (CONTINUED)
--------------------------------------------------------------------------------

Indebtedness made or created in reliance upon the professed exercise of such
powers shall be guaranteed under this Guaranty.

WAIVER. Lender shall not be deemed to have waived any rights under this Guaranty
unless such waiver is given in writing and signed by Lender. No delay or
omission on the part of Lender in exercising any right shall operate as a waiver
of such right or any other right. A waiver by Lender of a provision of this
Guaranty shall not prejudice or constitute a waiver of Lender's right otherwise
to demand strict compliance with that provision or any other provision of this
Guaranty. No prior waiver by Lender, nor any course of dealing between Lender
and Guarantor, shall constitute a waiver of any of Lender's rights or of any of
Guarantor's obligations as to any future transactions. Whenever the consent of
Lender is required under this Guaranty, the granting of such consent by Lender
in any instance shall not constitute continuing consent to subsequent instances
where such consent is required and in all cases such consent may be granted or
withheld in the sole discretion of Lender.

EACH UNDERSIGNED GUARANTOR ACKNOWLEDGES HAVING READ ALL THE PROVISIONS OF THIS
GUARANTY AND AGREES TO ITS TERMS. IN ADDITION, EACH GUARANTOR UNDERSTANDS THAT
THIS GUARANTY IS EFFECTIVE UPON GUARANTOR'S EXECUTION AND DELIVERY OF THIS
GUARANTY TO LENDER AND THAT THE GUARANTY WILL CONTINUE UNTIL TERMINATED IN THE
MANNER SET FORTH IN THE SECTION TITLED "DURATION OF GUARANTY." NO FORMAL
ACCEPTANCE BY LENDER IS NECESSARY TO MAKE THIS GUARANTY EFFECTIVE. THIS GUARANTY
IS DATED APRIL 3, 1998.

GUARANTOR:


X   /s/ GAYLEN JORGENSEN
  ----------------------------------------
    GAYLEN JORGENSEN

================================================================================
LASER PRO, Reg. U.S. Pat. & T.M. Off., Ver 3.25 (c) CFI ProServices, Inc. All
rights reserved. [UT-E20 FIVE.LN]