EDIT: I have a 4 or 5" cylinder with a good 4 feet or maybe a little more stroke with shackles on each end. I just plug it into the closest remotes. Got it free from a friend. It probably came off some large construction equipment. I have used this to extricate myself many times, especially when alone. Sometimes it's only a matter of moving a couple of feet or so. You have perfect control over the pull, there is no jerking or breakage (except the occassional crappy chain), you don't dig up the area with the towing machine and the forces exerted are immense!
That's an awesome idea.