this is how i do them to get the lurcher pup retreiving skin the rabbit then unfold the skin (this is if you do rabbits same as me )cut around the skin to seperate it from the head then cut down it to open it up then i put lots of salt on it completely over the skin with salf (just the inside) then leave it a day in the shed or whatever then peg it on the washing line to get some air to it til the skin goes hard then rub it all down try and get most of the salt off then after a few days of use it should loosen up again;)