Vertglas
The Lovett Marine "Vertglas" has worked very well for me. I got it from West Marine, it's a kit of four items, a boat wash, coumpound, finish restorer and remover around $65. I've been using it on my c-30 for about 3 years now and its excellent! It will make your hull look brand new. Its a liquid that you apply in numerous coats that is not a wax, but a restorer which fills the pours of the glass and then builds to make a protective layer. Every year when I put it on I get many compliments and inquiries as to where to get it. Each year I lightly compound the hull then add 4-6 coats. Easily lasts the entire season. I highly recommend.