I just spent sat. nite in a test hammock I built to see if I like sleeping in a hammock. I found some not to stretchy polyester in the dollar area at wally world and it seemed fine. I tend to toss and turn during the nite and used a foam pad under the bag in the hammock. I never had the sensation of it tipping but the thing stretched a little and had to adjust the ropes during the nite. I could sleep on my side ok but not on my stomach. I was able to sleep about 9 hours and felt it was ok. I put up a makeshift tarp over the top and its a good thing I did cause it rained a little but I stayed dry. The pad kept shifting and I ended up in the bottom of the hammock. Seems it was hard to find a happy medium on the sag though. Is there videos of the clark hammock in use and setup? Does the Clark come with instructions? I can't imagine flipping over in this type of hammock but have done it in one of those flat backyard types.