Originally Posted by LostCause
So in other words it's more comfortable for the back, but you can't dangle the legs.
i have no discomfort with my end gathered hammocks, and i am very fond of their slight curvatures. i have a memory foam mattress on my bed that is quite good. good enough to where i can now sleep on my back for the most part (which was always impossible before this mattress), but i am always wishing i could incline the torso just a few inches like i experience in my hammock. i don't see laying perfectly flat as having an advantage, especially with regard to sleeping on your back. i think the thing with more flatness, is more comfort on your side, but there are trade offs. end gathered hammocks seem to have more room for side sleeping, but are less flat and some people experience hip torque when laying on your side with your legs straight out. bridges will generally feel flatter laying on your side with the legs straight and could be an advantage if you sleep that way alot. the bridges are quite narrow, some more than others, so there will be less room for laying on your side with your knees up for instance. (that's not to say there aren't bridges wide enough to sleep in the fetal position, but there's just not as much width for knees, elbows, etc.)