Not my idea...
but worth a try ....."I used a Porter-Cable 4" square palm (finishing) sander with a well-worn piece of 100 grit paper, the adhesive kind, and new T-shirt rag material, one piece, and kept moving to a clean spot on the rag material to prevent compound build-up and to be sure the sandpaper did not wear through the rag. The purpose of the paper was to be sure the rag was being moved. I wasn't convinced the rubber pad on the sander had enough friction. I think Black & Decker makes a 5" round random-orbital action sander with a little more movement that would work even better than my finish sander. I think I'll look for one of those on sale before I tackle the finish polishing on my next trailer. I used a regular car polishing buffer for the first grade of polish which did leave some swirls. I plan to polish the Tradewind again within a year and will use only the "S" grade with a small sander. Don't see the need to spend the bucks for the fancy two-headed thing. Another thing I learned the hard way was to not use very much compound. A little works better than a lot and you don't end up having to wipe off a lot of black, unused compound. "
I don't know - I've often wondered what action makes the cyclo so successful. I'll give it a shot later on and see what happens (probably in a month or two).