Originally Posted by
haugy
for the love of god........do not do this to your boat!!!!!!!!!! Especially dry!
Going down to anything under 600 grit is for fixing damaged areas on your gelcoat. Not polishing it. You will take too much off. Oxidation is not that thick, just very hard. The only reason you would need to go that aggressive is to remove major damage scratches. And make sure it is wet, not dry.
Please, anyone reading this, start with 600 grit at the most! Most boats only need 1000 grit +, and some patience. I've polished up some really bad boats, and have never gone lower than 600 grit.