: I have been offered the pursuit LP that Simone used at Santa Cruz. One of the
: problems with this kayak is that it left white marks on my rack. I am
: thinking that the gel coat is breaking down. How do I repair this?

I would suggest cleaning it with an abrasive cleaner made for removing oxidation from fiberglass (gelcoat). You can get them at marine stores, or you could just use polishing compound from an automotive or hardware store. If you don't get a shiny surface using these, you'll need to wet sand the surface. If the gelcoat is thin and you sand through, you'll need to re-coat it or paint it.