B. I've resin laminated the whole frame, however when I'm trying to get a polish finish using wet and dry little white dots start showing up like they are in the resin it self.

Its been proving really difficult to try and sand things smooth with out it going through to the metal of the parts at times, it's only small places it just a pain, any solutions would be greatly appreciated.

The 2-part clear coat is that referring to gel coating?

I'm am guessing that to get the tank good I'll have to put another layer of fabric over?