I'm not claiming the hoops change anything much but the visuals. They don't generate enough tension. For that, you'd need a bridge. The point swallowed in my verbiage is that your torso flattens out the very same ridges at the head end that bother people at the foot end where there is not a broad, heavy press to spread and squash them. I can't recall that anyone complains of "neck pressure."
Which takes you to the mini-spreader bar. Or even one that is as wide as found on bridge hammocks. Not for flatness, but to wipe out the ridges and resultant calf pressure.