Dan, I have a 1985 O'day 25 anniversary that's off-white. The non-skid has some old white wax on parts of it. The hull was recently waxed and looks real good. What's the best way to clean the non-skid with something that won't hurt the wax on the hull if it runs off? Should I use poly-prep then poly-glo on the non-skid? Thanks. John