What works really well with deer hanging head up from a pole/tree is a knife down as far as around the front legs, then tie a rope around a handful of hide on the back. connect the rope to your quad (winch or hitch) and slowly tighten rope. Peels right down to bottom of back legs, then cut off legs -done. Haven't tried it when carcass has cooled out, but slicker than snot on a plate with a warm carcass.
doesn't work well on a cold carcass.... That's where the air compressor trick works well...