you also may be laying too far into the footbox, you're body needs to me more centered (head and feet equal distance from the end of the hammock)

try moving toward the head end so there is some space beyond your feet, this will also likely require hanging the head end a good bit lower to avoid feeling too inclined in the torso.

also might try moving your entire torso a few inches to the right (lay slightly closer to the shelf)

stuffsac under the knees is comfy too