Storm step #1 with light pressure, using the slow speed setting of a two speed spinner has been really good for me. Obviously, it doesn't handle near as high of volume of oil, as in the box finish, but is much more useful, and doesn't need as much maintenance to keep it consistent. I tend to stay away from "polishes" on these kind of covers, as using compound like the Step series, or abralon without skipping any grits, seems to work best, when trying to smooth out the surface of these newer covers.