As heavy as the covers are and knowing first hand how hard they are to get on and off, I would think almost everyone had one. What a struggle to get off and on. I loose almost all my heat at night with out it and have to start over with the solar heaters. ( They are not on the roof yet for full sun)

Surely someone knows about the different kinds and which one to get. I have seen some really cheap ones.

Aranon