+1 on Magic Erasers. I used them today for the first time preparing our Hurricane 733 for an inspection next week. It cut through the dead pigment/oxidation on the sponsons in seconds. It also made quick work of some black rub marks and spots on the interior FRP. If I had more than three of them, I would've done the whole boat. Finished it off with 303.
Full many a sailor points with pride To cruises o’er the ocean wide; But they cannot compare with me, For I have sailed the Bering Sea. While though you’ve weathered fiercest gale And every ocean, you have sailed; You cannot a salty sailor be Until you've sailed the Bering Sea.