No pics, but here's the design we used on many of leases. 10 foot sections of 6X6 for uprights, approximately 10 feet apart. (allows you to back up a truck between the poles). Sink them 2 feet and anchor in concrete. Another 6X6 for the top. Use lags to secure. Secure a pully assembly in the center.
I'm partial to the multi pully assemblies to make it easier to raise the deer and it also allows for either head up or down postion.
The one I grew up using is still my favorite design. It allows two people to clean at once and doesn't allow the deer to spin like the closehanger looking thing on a cable.
The red is a heavy rope with a knot at the end of it, about 2/3rds of the rope is tied in a loop and if you slit the deers hocks you can run the other 1/3rd through and back up through the loop allowing the knot on the end of the rope to catch when pressure is applied.
One thing we have out our club that's nice is a set of wide vice grips attached to chains cemented into the ground. Grasp the deer skin with the vice grips then start cranking, it pulls the skin right off.
We have a 4 x 4 across two trees about 15 feet high. From that 4x4 we have a couple nylon block and tackles along with two lines from boat winches to pull em up with. I know it's old school to hang em from gambles by the hind legs, but let me give you something to think about.
been a taxidermist since 1957 and can tell you this. If you hang a buck by the hind legs, blood will settle in the neck and head area between the skin and meat, making it messy for the taxidermist. We hang all our deer by the head, this allows em to drain out better when weather allows hanging for several days. Of course, we have a couple hardheads that insist on hanging by the hindlegs, but it's their deer. Pulling the hide off with a golfball using fourwheeler, truck or winch also works better if hung from the head. Skinning a hog, use a knife like used for opening cardboard boxes. Ring around the neck behind the ears, around the legs, then, cut the hide in strips about 2 inches wide. Pull the strips off with catfish pliers/strippers. Don't forget, hange em by the head. End result, neat, clean and not gapped up. Try it, and you'll see.