Lots of boat owners use SofScrub-With-Bleach to clean their fiberglass and remove stains. Many on RV.net have scrubbed their coach with BarKeepersFriend, then applied several coats of Zep or RedMaxPro, which are essentially industrial floor polishes. There's a boat offering, called PoliGlow or something like that. The BOATERS' complaint is the stuff yellows, peels, then is near impossible to completely remove. I have not heard that from RV owners. And I can tell you that at least from my attempt, using auto polish is about useless. It gets pretty because it's clean, but the shine goes away just about immediately. A "Golden Gate Bridge" approach would probably work. Just polish the RV in a continuous loop. Just start where you finished and go around again.
