I recently purchased a 1976 O'Day 22. Now I am a first time boat owner. I am interested in painting the bottom and topside. I purchased Coppersheild 45 ablative paint for the bottom and "Mega Gloss 1 part marine topside polyurethane enamel" for the topside. I have no way of finding out the type of bottom paint the previous owner used. Any suggestions on the proper way to tackle this project would be welcome.