It might help get it started to jack up one end and put some 4" or bigger wooden posts on the ground under the runners. If you have enough of them, you can move it a few feet by letting them be like rollers then move the ones in the back (that have been moved beyond) back to the front, until you have it where you want it. I, too, would suggest a wench (although a winch will work as well, if you find a good strong one!)
