I previously posted asking recommendations for repainting a galvanized angle cap rail the runs around my old 18' BW hull and received excellent and helpful information. It turns out that the metal is actually aluminum, (which I realized after a magnet would not hold to it). So my question is for painting recommendations for aluminum. The piece is about 1-1/2"x1-1/2"x1/8" and runs all around the top edge of the hull. The old paint is peeling off.