T-bone collision damage to gunwhale
This past Sunday we had a crowded weather mark-rounding t-bone collision that resulted in some damage to one boat's rub rail and underlying fiberglas. The aluminum looks repairable with some straightening work. However, we're not sure where to start with the Fiberglas and gelcoat. The horizontal indent is about a 1/2 inch, and there is a surface bulge both on the deck and the under-side of the gunwhale. The damaged area is just aft of the back end of the cockpit. Obviously, the gelcoat is chipped. Someone suggested just grind it down to shape, and fill with marinetex or thickened expoxy. Has anyone repaired this sort of impact before, and if so, how?