before gutting the rabbit it should be squeezed to get the piss out the bladder,i do this straight after killing the rabbit,this is done by holding the rabbit by the front legs,belly facing away from you,put your hand firmly around rabbits body and pressing your thumb on the rabbits belly and firmly run down the body,do this 3 or 4 times or until no more piss is coming out. I would then cut of head and hang for no more than a day,hope this helps