Butch-
I understand all that about the setup. I was wondering if instead of having the prusic knot tightagainst the tree, if I could slide it down 16" or so on the rope which would loosen the tether and give me more mobility.

NYBH,
I have a Summit Python that I use almost ALL the time I also have the same harness setup that you do I dont have any problems with mine. I put my rope about neck high when standing and slide my prussic knot down the tether until i haved enough freedom. I dont see how it could slide past the top stand cable at most BUT i have never had my tether slide and i climb a variety of trees mostly pine. hope you figure it out and make sure you wear one of some kind

NYBH... Of course! You can move the prussic knot all around to enable you the most freedom while allowing the safety rope to stay secure. You just have to fiddle around with it. I've had my prussic knot all the way the end of the rope near the big knot, when I was in a big diameter tree and it was still okay - limited range of movement - but was still okay.

Butch A.