Corolary to that.....how do you attach the theraband and shock cord? My knots are slipping under the tension. So for me the easiest has been to make a little loop with small bungee cords...the realy small light ones with two hooks a little thicker than paperclips. I put that loop through the buried locked end of one side of my ucrs i made out of the recent group buy. Doubled into a loop these little bungees are quite strong and i tape over the hooks so i won't lose them in the woods like a slingshot.
This is easy but i am not sure what is the best and look forward to hearing.