Finally tried the tent out last night. I set it up a while back in the yard, and put the sleeping pads in it. My thermarest didnt slide too bad, but my blue pad slid awful. Because of that I had put a few stripes of the silicone I sealed it with on the inside of the floor for grip. I discovered last night that the same thing is needed on the OUTSIDE of the floor to prevent sliding on the tyvek ground sheet. On even the smallest incline, the entire floor would try to slide away. I had to set up in about four different locations to finally find a spot flat enough. Thats really the only complaint I have with the tent so far. Something else I found out is that the tensioners I put on the lines for the side pulls need to be a lighter elastic cord. The cord I used for the end pulls seems to be just right though.