Thanks, I was thinking about something like your example A with hardware but I was going to make both ends adjustable. After the discussion here, I think I will first try with just the one adjustable end and see how it goes. I am not packing the hammock so weight isn't a concern for me. One difference I plan to try is to tie the biner to the RL on the adjustable side so I can loop it around the tree and clip it to the prussik and tarp in one motion. Then I can hang the tarp without tying any knots.