this is interesting. i agree with jeremy that cosmetics are easier using polyester resin (the 'other resin'- what hobies are made of, and what i assume he would use) however polyester resin is not as good an adhesive as epoxy. i also differ with his aversion to adding inspection ports, which is common practice on hobies. the boat i now own suffered a similar fate as yours. it was sideswiped by a riding lawnmower. it was 'professionally repaired' at a local boatyard, they did a beautiful job. the crack reopened while the boat was being rolled down to the beach on its beach wheels.. they redid the repair, and it cracked again. the owner then replaced the hull. i am not disparaging professionals. i defer to his judgment jeremy appears to be a pro working at a dealership. i trust he can do this repair successfully using his methods. i am merely an amateur boatbuilder/tinkerer. i wouldnt try laminating into a polyester surface using polyester resin as an adhesive, thats just my opinion. i hope others will weigh in : )