I just did a bunch of this. I used the instructions on this site:
http://www.sailnet.com/forums/gear-maintenance/52772-tips-compound-polish-wax.htmlMy gel coat was in pretty good shape too, so I started with the Gel Coat Compount (no sanding).
Products I used:
Presta Gel Coat Compount with 3M5711 compound pad
then
Presta Ultra Cutting Creme with 3M5713 pad
I bought and was going to use the Presta Chroma as well, but I ran out of time. I thought it looked great after the gel coat compound - but then I used the cutting creme and man it looks like new now. Another note, the cutting creme went on a lot easier and faster for me. Maybe 1/4 of the time that the Gel coat compound took.
So...after just using these two products, I have a real shine (no silicone in either) and haven't even applied wax yet (will be Collinite #885 Fleet Wax Paste Version, by hand). I didn't use the pads that came with the 9227. I also bought an extension 3M5710 and the more flexible backing pad 3M5717.
I have to say I am VERY impressed with the results - and I've never even waxed my car before. I'd also like to say that those that are scared to use the 9227 don't need to be, just don't leave it in one place, it will be fine.
I bought my pads, 9227 and Presta product from National Tool Warehouse. I had to buy the Gel Coat Compound directly from Presta since NTW didn't carry it. I had it all shipped to CBI USA (warehouse just over the boarder).
Hope that helps - you are embarking on a LOT of work, but the results are fantastic. This is however, one time I wished I had a sailboat where the sides are nice and smooth without all the hull contours to get in the way.
I'll let you know how the waxing goes once I get to it.
Good luck!
Steve.