I purchased a Carver mooring cover through www.iboats.com last fall. It was on a clear out, so I ended up getting for a song .... approx. $450.00 for a 32' cover. The material is the equivalent to Sunbrella .... I think it is called Durashield or something close to that. Fits great and is fairly light compared to the duck cotton one I had before.
It fits like a shower cap with loops to use to tie down .... I don't think I would trailer with it but they maintain you can.
Good Luck ....