At Spring launch don't forget to clean your plastic hatches, port lites, companionway sliders and all other parts properly. I suggest on Plexi or Lexan parts only use mild liquid soap & soft cotton cloths...NO PAPER TOWELS or WINDEX. Or try a product called NOVUS, it comes as a cleaner& 2 scratch remover types, works great!!!! Any questions on plastics of all types e-mail me at RiSKIT37@cs.com . More helpful plastic tips coming soon. Russ Kline(H-25)