Painting keelFin & Bulb

I stripped my bulb to refinish it, and I was wondering how hot to treat the final clearcoat:

Should I just leave it glossy-hard or sand it with some 200 or 400 paper. I even have some 12,000 grit paper, but saving that for other stuff.

No sailing smiley? I have one…

I sand everything front to back with 600 and then rubbing compound and then apply Starbrite polish.

Wouldn’t the rubbing compound undo the sanding effect?