well, today was a little better outside, so I went out and worked on the tub. I figured out why the cover was so heavy. ICE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I bet you, that I had atleast 200lbs. The ice was so thick, 3/4" to be exact! I guess when it snowed, over top, I just assumed that it was all snow. It was some serious work getting it off but the cover is back to regular