Know a guy that built one out of an old windmill stand/base. Stand was about 15 feet tall. He attached a winch crank about 3 feet off the ground, ran a cable up through a pulley he attached at the top, and attached the cable to a gambrel. You'd skin the deers back legs to the knee, connect the cut at the bunghole, then attach the flaps of skin to a couple of wire nooses he had attached to the base. Cut the front legs off at the knee as well. Attach the gambrel and start cranking. The deer would ride up one side of the windmill as it was skinned, and once skinned all the way to the neck, would stay very taught and it would not spin, which made it easy to quarter out. No need to gut or split the hide up the belly or legs either.
Worked awesome until my buddy shot a deer in the spine behind the ribcage and we promptly pulled the deer in two. That was a mess.
