I boat a 14' Fiberglass boat and it had some old crappy paint on it. Sooo.... I started scraping, some spots where really thick, so i bought some "ready $trip". It got most of it off. But I still have some paint left. Anyone have any suggestions? I believe if I tried sanding now it would clog the paper. Please help, I am ready to start this project and the hull paint is holding me up.