I have a 1972 Flying Scot with very hard, badly flaking white deck paint of unknown origin. This white "paint" is on top of the original beige gelcoat, and it is very hard. I can break off bits of flake, and they are very hard and inflexible. I'm not sure if this is a second layer of gelcoat, or epoxy paint, or what? I've tried peel-away, but the "paint" seems impervious. I've made very slow progress with 80 grit random orbital, but that looks like weeks of work. Does anyone know of a paint remover that will work on epoxy paint without damaging the underlying gelcoat?