not necessarily a forum but take a look at collinite products. just did a friends with polish and then 845. he was more than happy. 15 year old gel coat looked great. i am getting him there boat wax.
Your methods will be the same, it's just a bigger surface. Clean the gel coat with Duragloss 501 and then top it with Collinite boat wax and you'll be absolutely amazed at the finish and the protection.