Our coaches are painted with automotive 2 part paints (mine is Sikkens, not sure if that's the paint on everyones)
Any product or process you would use on a late model car should be fine. I would use fine rubbing compound and a buffer and have at it. Just be careful you don't burn through the clear coat.
Vaughan & Tracy 2013 RW 36RL, 2013 F350 DRW CC, 2016 Focus. MorRyde IS, MorRyde pinbox, disc brakes, Comfort Ride Hitch. "Life is to be embraced, Grab it with both arms ! "