I've polished a lot of metal, restoring antique Harleys. A Dremel tool with a cloth buffing wheel, Jeweler's Rouge, turtle wax, finished with Motbers works Great! I even have a big clotb wheel for my bench grinder. The amount of stretching coming off the radius in the center of the boat hole in the cloth is how you can tell the coarseness of the cloth believe it or not... once you start polishing metal especially aluminum you're not going to stop. It won't be a weekly thing but you'll find you have to keep up on it
