I was getting very frustrated with the blue gelcoat stripe on my 2006 Vista 278. I took some tuition from boat detailers, tried various products and bought a good power polisher but the results did not last long. I was thinking about having the area painted when a club member from a nearby pen walked over and cleaned a small area of my gelcoat with TCnano. I was impressed and immediately ordered some. I was initially cynical about an "all in one product". As it says on the label, it cleans, polishes and seals in one application. The product builds up over time but does not have to be stripped bewteen appplications. I also use it for general cleaning and stainless steel.
http://www.tcnano.com/information.asp?page=153