You want to use Epoxy, dont fool around with the polyester, it does not bond to almost everything on the hull. Epoxy is a lot more expensive and more toxic, but it will bond a lot better. Always wear gloves!!! Repeated exposure to epoxy will make you develope and allergic reaction and you will never be able to work with it again (it takes a lot of exposure to it through the skin, but dont give yourself a headstart...)
Both can cure clear, depending on brand, some of the cheaper ones cure yellow, but honestly it doesnt matter, because you should never have epoxy exposed to sunlight, it should always be painted or covered. West and MAS cure clear, US composites cures yellow (not a problem at all)
Go here and read this top to bottom
http://www.westsystem.com/frames/tier1/usingepoxy.htm
If you have any questions feel free to PM me, I'm doing some epoxy work on a sqaure hood and hull now.
West Systems is expensive, but the customer support is great, and also you can get 'pumps' that measure the ratio for you, so its almost foolproof. When laying down remember, you want to do it at the same time, so it all cures together as one, and you dont have to worry about amine blush (thats in the manual, BTW, fast blushes harder then slow)
MAS is another great system, same concept with the pumps. A cheap alternative that quite a few people use is the US composites brand from
www.uscomposites.com They also have pumps available, and are pretty cheap at 54 for a gallon, also have any brushes and cups you'll need. You wont need a gallon for the ski, but thats what I compare brands by.
I work with MAS and West, but only because I get it at a good price locally.
NEVER use polyester on top of Epoxy, it doesnt bond (that includes Polyester based body fillers, meaning a lot of them).
