Aren't there some fans of lots of sag at HF?
Notice how far center ridge(Lt. hand points to Velcro opening) is from left calf(my rt heel is over Lt. calf. ) IOW, NO calf pressure
Almost at 90* for this fetal position with NO side problems. A center ridge forms under waist providing support. Less severe angles are also very comfortable for fetal or side with legs straight.
Warbonnet Climashield Torso UQ works perfectly,as does a JRB MW4.
"Backwards" in hammock seems about as comfy
as regular. Still no calf pressure.
Plenty comfortable in straight mid-line position. No diagonal needed.