[quote=Rider_55]Consider using polyester resin available at auto parts stores and Wal-mart. It is generally cheaper and you can gelcoat it in the future if you want to. I use epoxy for internal repairs and polyester for external repairs.
If you are worried about creating a weak spot around the port add a few layers of epoxy fiberglass on the inside of the hulls around the edge of the port.
Also be sure to dig out a little bit of the foam core and refill the space between the voids with thickened epoxy or polyester resin.
I just used baby powder for a thickener and it works great. Handy cheap, and effective.[/quote]
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