Angle grinder with a wire wheel head. Followed with 120g, 180g, 220g sandpaper with an air DA. Then a air powered die grinder with a buffing head. And lots of chrome polish. It took me and the kid who works for me about 12 hours all said and done. Way more work then I would've thought.
The crappy thing is I made trophies for skippers only. MASSIVE brain fart. A week or so before the regatta I figured this out. As a save I had some extra T-shirts made that said "I dragged my skipper into [1st, 2nd, 3rd]place and all I got was this lousy T-shirt". I thought it was a good save. Something different in any case.
This year I'm stealing an idea and making little cutting boards for cheese as trophies.