It sounds weird but Sno Bol toilet bowl cleaner works great on dark specks on fiberglass. It basically has hydrochloric acid in it. And it gives your boat that fresh feeling. I don't know what it does to gelcoat or fiberglass over a long period but the friend who told me about it has been doing it for years. _______________________________________________ http://mailman.xmission.com/cgi-bin/mailman/listinfo/montgomery_boats
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