Re: Question about the best Class B covers
I got the 20-22' one from Goldline for my 2013 PW Excel. It does not have a spare in the back, and that cover was way too long. In addition, it was way too long on the sides. They sent me one that was 96" on the sides. I returned it for the 18-20' version and correct side length. Still have plenty of room lengthwise, and the sides go to the ground, but can be raised by the straps.
I put a plastic tub over the antenna when I put it on so nothing gets caught. When you first get it, un-roll it and re-roll it inside facing down. If you fold in the sides and back, then roll half forward and half back, its not too hard to flop it on the roof and roll back/front-wise, and then push over the sides. I think its about 40 lbs. Stuffing in the bag isn't to bad if you just sit on it a few times to release air (from the cover).
Have had it on for two winters now and haven't noticed any scrapping or damage to the surface.
And its nice to uncover a clean unit when you're ready to roll. If it wasn't covered, I'd probably wash it constantly since I keep it in the back driveway.