When I was farming rabbits for the London restaurant trade we took the skin off by trimming down the inside of the back legs and cutting it free around the vent, then we pulled it down and off like a pullover, cut around the front feet and then around the neck to get a tubular pelt. This is easier to stretch by cutting coffin shaped pieces of cardboard and shoving them into the inside out skin.
We then hung them up in an airy shed to dry and sold them for about 10P each to the felt industry. We were butchering about 50 a week so it was a nice little addition to the overal profits.