Search:

i used to have a book on game proccessing that demonstrated skinning a deer with a tree limb, a rope, a golf ball and a pick-up.

here we go, like this:
...

i skin on the ground [on the hide] or table-top.

hanging's good for tenderizing and bleeding, and i can see how it would help keep everything clean while skinning, but i'm mostly used to skinning...

key to good skinning is to only use the knife when it's actually needed.