Here is a perspective you may wish to consider...
What about the organization that donated $10,000 to the cause or organization (gold member) and gets an 18" x 24"
sign? How will they feel when they compare that to the
sign shop that donated $200.00 for a hole and put up a billboard. Also, how is the organization sponsoring the event going to feel and react to that, and the fact that your
sign is better
than the signage for the event.
Golf outing
signs are simple, small, and subtle for a reason.
Typically these functions are for the purpose of raising money, not
to provide commercial opportunities for the participants. I realize
there are giveaways and signage and things...but generally it is low key stuff.
I hate to rain on the golf outing parade, but my reaction is you may agitate a lot of people with this and create the opposite response
you are looking for.