I had never used one before but after last winters wrath on the two campers(Class C & Travel trailer) I had in the driveway,I said no more and bought one for the truck camper.
I have know idea why I have not done this before..I would not be without one now..It really protects the camper from the heavy rain and especially the heavy snow.I still have to shovel or broom it off and the luggage racks are a pain to get around.I had a swimming pool up there before I removed the north/south bar.
It is a Classic PolyPro 3 and has know signs of wear so far.It is easy to take off for one person,two is easier and putting it on is a piece of cake with two people.My son and I put it back on last night..He stood in the back of his pickup and I was on a ladder in the rear..Two minutes later it was on...With one person it is a pain to put on because I don't like going on the roof.
Initial out of the box setup was bad.They did not roll it up right..Best bet is unroll it first then roll it up accordingly to put on the camper front to back..Again,with two people it is so quick and easy..
I highly recommend them.They keep the elements from doing there damage to all the window and roof seams that mother nature dishes out threw out the winter here in central Idaho..
Lance 9.6
400 watts solar mounted/200 watts portable
500ah Lifep04