I just heard about this product and found no references to it on a few detailing forums though I have seen various questions about how to best handle the gelcoats on boats.
If you need to do boats, you'll want to do a Google search on "Poliglow" and read some of the reviews by guys with Big...
My white Hobie catamaran sits in the sun all summer long. Klasse says AIO is great for boats so I put it on. And, 303 says that it is great for boats for the UV protection to keep the gelcoat from oxidizing. Has anyone else put 303 on top of AIO or SG ?
www.303products.com/pricing/pricing_protectant.htm
www.theoutdoorscenter.com/OutdoorCenters_Storefront/asp_storefront/FrameSet.asp has a gallon for $43 + $8 shipping.