What I've done with older hulls that worked fine is to simply use a good quality fiberglass cloth and fiberglass resin and masking tape, which can be found at most discount stores. After roughing up the surface, cut 2 or 2 1/2 inch strips of the fiberglass cloth and tape the cloth by the edges to the area of the hull bottoms between the pylons. Then just pour on the resin and work it into the cloth. The masking tape protects the sides of the hulls and helps hold in the resin. With a rasp or orbital sander the finishing is not too bad. The resin will last if the harderner is used correctly.



I did this to a set of 16 hulls 7 years ago and they're still ok. Epoxy (like West Systems) would be better but, at 40 bucks a quart is more expensive.