First, go to
http://perfectpolish.com/ and spend a couple hours learning what you can from Tom's excellent site. Second, depending on the quality of your skins, you may need to start with something coarser to work down the grain in the aluminum. My drill is to start with Nuvite F7 with a wool bonnet on the HF variable speed polisher - fairly low speed, say 1000 to 1500 rpm, followed by C or S with the wool bonnet, and finishing with S on the cyclo using Tom's cotton cloths, or pure soft cotton from a fabric store. I think you can get pretty good results with S on a random orbital too. One Navion expert I know prefers the RA to the Cyclo, though she has both.
I'm still not happy with my final finish as seen in bright sun. Looks wonderful in the hangar. I've tried unidirectional polishing by hand with automotive clearcoat polish (microfiber rags) with good results, but its a real pain to do.
Good Luck
