Solo? Whats the problem with working on the ground? Thats SOP.
I wouldnt bother hanging, as you’ll likely need a 3:1 or better to get it hung by yourself. its tough to use really skinny cord, and having thicker cord takes up space and weight. If you must hang it (why??) then i’d want 25’+ of the thickest cord I can accept carrying (have to reach over a big branch and back to ground) plus you’ll need a couple carabiners or mini pulleys to give you enough mechanical advantage to get it hung. And probably a sapling cut to go through the hocks to hang it from. Frankly its just not worth it unless you are in some wacky-azz situation like in standing water, etc. Cut it on the ground, lay meat on the hide or on a small sheet of plastic or tyvek, then into bags. Then flip, and repeat for the other side. Its fast, clean, no equipment needed, and no time futzing with branches, hanging, etc.