Red,
I drape it over the shaft, right before the hanger, the hanger does not grab the sock at all. I haven't really tried any serious hanging with it, I just experimented with 10 pounds or less to see if it would work as a hanger and it seemed to work fine, but I don't know about heavier weight. I've been using it to do manual stretches, in all directions. I have a thin rope attached to the ends of the sock that I put around my neck for straight up stretches, all I have to do is lean back and get a totally hands free stretch. I can also loop the rope around my feet and lean back for a hands free straight down stretch, or around a door knob for straight out. Like DLD said, it is pulling and hanging point so there seems to be tons of options, I like the hands free methods because I tend to hold the stretches longer if I can just get into position and forget about it for a few minutes.
Dford