The way we do them is to lie them on their fronts and go through the skin on the back, and slide up along the backbone. Pull the skin away from the inner membranes - dont use a knife, just use your fingers....
Pull the skin down the legs front and back and keep pulling up to the neck. You end up with a 'bunny handbag'...!
Chop the feet off with a sharp knife/stick or axe, then pull the skin up over the head and cut the head off at the neck - you've now got a complete bunny skin with the feet and head attached. The fur round the anus is probably still intact, so just leave it.
The nice thing is that the guts are still held in the membrane. Turn it onto its back, and cut the membrane carefully. Cut up to the rib cage, then tip the guts out. Cut off the intestine about 6 inches from the anus, and then cut a 'V' around it, and a quick pull and the anus and attached fur and intestine will come out in one piece - no contamination !!
Then push 2 fingers up through the diaphragm, open them and hook the heart and lungs out and pull...!
Thats it....!!!! Its a lot quicker to do it than to write it..!!! Takes one of our guys about 90 seconds.....
We'll be doing a few this weekend if anyone wants a photographic 'how to'......
Cheers
Peter