I'm not sure what tool to recommend to you. I think you would be better off wet sanding, then use a sealant type product. I used to tow my boats with the cover on just because of the stuff that would come up on the road and make a mess of the carpet. I just made sure wherever it would chaff I...
The haze you are seeing will be silver eventually. Boats don't have the clear coat like most paint jobs that are done on cars. What you are seeing is the the gel coat rubbing through to the silver flake in the gel. Depending on the year, some boats silver flake are.008, or they could be as large...