never thought of a larkshead but that makes perfect sense.
i didnt use a diamond knot because, well, i just cant figure them out. The cord used is whatever comes on the GT UL not the best in the world but apparently rated to somewhere around 1000lbs. One thing that was nice about that cord is its three strand core thats was relatively stiff. this made freeing the overhand knot in the middle a breeze this morning.
Trust me guys, i wouldn't generally hang from this sort of rig and im by no way suggested that you should. i was doing so solely to test this idea and it worked pretty well. Not my every day but if i needed to i would trust it.
...in it for pics.