Hello, I’m new here but have some questions I am really hoping to get answered! My dad just bought a used camper, and the fiberglass was faded and chalky looking. So after some research he bought a product to remove the oxidation and restore the shine. He used to product as the directions said and it looks great in the shade…but in direct sunlight it is just streaky as hell. I am worried that it can’t be fixed bc it’s a gelcoat type product he used. Any advice on where to go from here? Can it be fixed without sanding possible? I would really appreciate any advice! Thank you!!