Are you sure it is missing the gel coat or is it just oxidized. My neighbor just wet sanded his red stripe 82 stars and stripes, then buffed with 3M heavy duty compound, and waxed and it looks great. It was heavily oxidized and rough but now it looks good. try the wet sanding and buffing first and see if it comes up shiny.
1993 Blue Stars and Stripes Prostar Powerslot 351HO
Mastercraft: Face It - If you are not a good skier behind this boat, you are not a good skier.