I was wondering the same.
Here are some pics for you Century.
This is the scoring I was talking about I will say that the right side of the boat seems to be coming off easier I'm using 220 on the electric orbital.
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This section took about a minute to rough although it's not completely done
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Then I sand with my Air sander with 150 to get the swirls out and get this
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I want to rough the rest of the hull like this before I more up to the next grit. After I rough it I wipe it down with a rag and water sand it with the 150 then wipe it down again. This way if I miss any swirls I can see the and after it dries go over that spot again.
Hope this helps.