Buffing out stump rash

Got some stump scuff marks in the last year on the old boat and was going to try to buff them out. What products would be recommended to remove them without messing up my gelcoat? Don't want to abrasive. I bought a buffer and bonnets to make it go faster and maybe do a better job. Thanks for the input.

3M perfect-it finishing glaze. Very mild and will work. You'd have to be stupid aggressive to damage the coat with this stuff.

BBC has lots of posts on buffing gelcoat.