: The gel coat serves no structural purpose. Sand away until all the
: void is gone. If you want it pretty take get a small bottle of
: Testor's Paint.
I wonder if you could tape over the top of the hole (maybe with metal duct tape to hold the shape better) and then use a syringe to inject epoxy into the void without having to sand away any more of the existing gel coat.
The Connyak BBS