It'll probably buff and polish out.
Hard to beleive an awning cleaner or something that is designed to clean vinyl/fabric damaged the gel, even if it was a bit oxidized.
RE oxidation? It's a semi constant effort to keep gelcoat from oxidizing. It has it's advantages over urethane paint, but you have to keep up with it, if it's exposed constantly to UV light.
Example, bought a 3 year old boat. Had been slipped for 2 summers only and the transom, where exposed (black gel coat), was very oxidized already. And the quality of it was assuredly better then what goes into an average RV.
