I make hobbles outa half a dozen strands of square baler twine--you gotta tie a knot that won't tighten, like a bowline. the easiest way to do it is have her in a chute, get a loop tied around each leg--above the ankles--then tie them togethor and get rid of the excess twine. Make sure you can get a finger under the loop easilly and be damned sure they can't get tighter.
This type of 'mothering' I don't have much sympathy for---i tie them plenty close togethor--probably less than a foot--- the hairs usually wore off by the time they're cut off. You can usually just walk up to them and cut them off w/o getting kicked, by the time they're ready.
Most cows will fight it, fall down, kick, etc---takes a bit of practice to savvy the deal---we had one last yr that musta been hobbled in previous life---she came outa the chute at a lope, did immediate 180, took the lil' woman, who was just ketchin third gear herself----and also musta interacted with this sweetie in an alternate universe---Carol A. was in mid leap, headed for the top rail and lookin like it might be a little short, when miss personality's haid caught mrs congenialitys rear and gave her just that perfect little added impetous that wus required---i really gotta start packin a camera....