The top cap on my boat has a little oxidation forming. I can buff it good and polish it and it will look good for a week or so and then it starts coming back. It all feels smooth except for the pin where the is a lot of metal flake. can I get by with just wet sanding and polishing real good and waxing a few times or do i need to see about getting it re gelcoated? the rest of the boat is in good shape. I bought the boat used and it was not taken very good care of as far as kept covered or garaged and I am slowly restoring. Carpet is next but if it is in need of gel then i am going to get it done before put new carpet in.