frenchy,
O.K. here goes; If you find yourself in a place with no trees... use fence posts, tie off between vehicles(if there are any around <img src="/images/graemlins/wink.gif" alt="" />), tie off around boulders, be creative. If all else fails, it can be used as a bivy, no knots neccessary. Lay it out on the ground, crawl in, and go to sleep critter free.

Twisting, turning, and the associated falling out of most hammocks isn't a problem, I've actually tried to "fall" out of the thing, and believe me, you aren't going to do it without a LOT of serious TRYING TO. You sleep on a diagonal with the support lines so you lay almost completely flat, and this also solves the "whoooa sh... thump" problem. I've rolled out of many a hammock of all sorts of designs, and the Hennessy has made a believer out of me.

The Hennessy replaces/improves on tent/bivy/sleeping bag (in cool to downright hot weather)/tarp/rain cover/and a lot of things I'm not thinking of right at the moment. I've got nothing to do with the company, except being a VERY satisfied customer. While I'll admit, that at first look, it may seem a bit pricey, when you try this thing and see what it can do and the gear that it can replace at a weight of about two pounds (I think that's just under a kilo, isn't it?) I'm sure that you'll see that it's some of the best money you've ever spent on camping/survival gear.

Troy