[GregN]

I think that over time all the covers would give up to the sun. I have a Calmark cover on mine. Have had for two years now, not showing any wear. I store my 5th wheel in Modesto, get hot there also. My main reason I cover mine is that it is very close to an orchard that pollenating bees fly back and forth from. If I did not cover it, it takes a while to scrub off all the bee dodo when washing. Many people cover, many don't. I know the Adco cover I had last about two years before it ripped down the middle the lenght of the trailer.