The shackle doesn't move. It's kinda tucked in there where it is as it happens. Also, it seems to seize pretty well so you have to have some tools to get it off and I've been lazy. It took me many tries to get it off when I had the bumper off putting in the Cibies. Right after that I put it back on to use it again and I haven't given it another thought, until now.
We do have several of these down at the ranch that came in one of those bulk auction sales things, so I guess I haven't placed a lot of value in it. It's not very practical and I a waiting for some new steel alloy ones to come in.
That's got me to wondering though, I wonder how many times someone has tried to run off with it and could get it off the truck.
