Going to make something like this for my DIY hammock and maybe the HH as well.
One idea I've been thinking about is to make a super long snake skin that attaches to the bag.
Picture a snake skin that's one piece rather than 2 and sewn into the edge of the bag opening. This would let me collapse the strung hammock for when I want some space to camp under the tarp.
I don't think the tarp will be part of the equation. It will get its own stuff sack.