But, without the harness, you could be dead a whole lot quicker. I think the key words are vertical and IMMOBILE. I only read the cover sheet but one would think that being able to flex your legs would prevent the puddling of your blood and, as posted, you would be against or near a tree. As USMC posted, does any of the stands even have straps long enough to supend you out of touch of anything?
I think its kinda nice to know.