can also try poliglow. saw it at the boat a couple years back but never tried it. http://www.poliglow-int.com/
I had a bad Poliglow experience
For most all the boats I do, I use 3m liquid cleaner wax with a rotary buffer. On some jobs it will get a hand applied coat of Collinite Insulator Wax. If heavily oxidized, I use a polishing compound made by Strata designed primarily for gel coat first.
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