Another Vote for Ceramic coating !!
We just had our 26' Crown Bowrider done by Getty Shine ………… our is classic Black on white and because of the sun beating down past the canvas the black on the bow had turned to a "chalky" grayish color along with other sections mid ship & in places along the freeboard.
As Formula states --- We bought a new boat!!
Not knocking Diamond Shine (never used them) but we had a great experience with John Getty / Getty Shine …. picked the boat up on one of their trailers from our Marina and took it to their shop mid week as we were having it completely detailed as well. "In for a penny - in for a pound
".