I have been suspending my HH Hex tarps thusly: The stock ridge suspension lines have been removed. On one end of the ridge I have tied a 6" loop of 3/16" bungee cord. Then to that loop, and to the other end of the ridge, I have tied on a short loop made from 3mm accessory cord going to a Prussic knot. The Prussic knots slide on 3mm accessory cord that goes to the tree where it is held around the tree with a small 'biner-like the HF 'biners sold by MrPrez. The tie-outs to ground all have bungee tensioners.
The reasons I like this set-up are: 1) it's simple- no knots to tie 2) it's adjustable- the tarp can be centered or moved without untying anything 3) there's no hardware to poke a hole in the tarp 4) all the tree sap is confined to the ends of the lines 5) the tarp stays tighter with all points bungeed.
My concerns: I have used this system in hot, cold, high wind, and light snow and ice with no complaint. But I have not used it in soaking rain. The prussics, thus far, have had no tendancy to slip, but I am not sure how they will perform when very wet. What'cha think????