Hello. We just bought a 2007 Bennington 2075 GS. It's been stored outside moored and the side panels are faded and somewhat chalky. What is the best way to brighten and clean side panels? I've pressure washed it, but clearly I need some type of polish / cleaner / compount. Do I buff it? If I have to buff it, do I have to remove fence to do so or can i buff while the panels are in place? Thanks!