Have you tried a cleaner wax? That normally has worked well for me. You could try a clay bar but use lightly and well lubed(I use this a lot for vehicles, never had to use for a boat). If that doesnt work I would try a very mild polish. Shoot me a pm with your address and I well send you a little polish that I use for smudges. Ive got a bottle that I will never completely use.BTW, what color gel?