FWIW, way way back when, I was in Manchester VT @ the Land Rover driving school. It was winter, and significant portions of the road had running water that flowed down in certain spots, subsequently freezing into solid sheets of ice. Think toboggan sled: winch up, tie off truck to keep from sliding back down when the winch was re-hooked further up the trail, re-winch, repeat. Later up the mountain I'm driving up towards the top of the area, and begin to slide backwards coming to a stop slightly diagonal with the rear facing the steep ravine below - 1 tire entirely too close for comfort. Everybody gets out of the truck, and first things first - hook the winch ahead to secure the truck. Only problem is that the truck is diagonal to the direction of the trail, ***** end pointed to impending doom. No problemo... instructor takes out the hi-lift from the back (which I didn't even know was in the truck), hooks it to the rear of the truck and to a tree on the other side, then jacks (hand winches) the entire rear of the truck over essentially straightening it back up on the trail - all the while still having the front winch line securing the vehicle from going over the edge of the ravine. I was 19, and this was my first experience with a hi-lift. Needless to say, I don't go off pavement without it.
Oh yeah, you can also jack the truck up with it! :sombrero: