I have a spider web crack about 2 1/2 inches in diameter.This is on a hull that is a high glossy white and no other imperfection on hull.I check this link out{http://www.diynet.com/diy/bo_maintenance_repair/article/0,2021,DIY_13718_2278093,00.html) and it seems like a lot of work for some simple hair line fractures. I tried a gel coat patch kit but that stuff sticked better to itself then to the boat.Is there anything else that I can try before drilling into my hull.