Brightsides doesn't really rub out. The gloss is in the outer layer paint
. It also can't be wet sanded and buffed. It can't be over-coated with anything (or so Interlux says), though I am experimenting with re-coats on test pieces on my classic fiberglass boat. First few tests have failed, but I have two more to try. Will hopefully get at it within the next month. If both the next tests fail, all I can do is remove the paint
right down to the fiberglass and do something different.
I am NOT a fan of Brightsides!