why not just butcher the rabbits and freeze the different cuts raw - so you cook it raw and cook it once, it'll work better as you'll get less tied of the same taste / texture of meat that'll you'll get if you "boil the bunnies"... plush you can still boil up the stripped carcasses with a few onions , carrots, spuds and celery to make a great white meat / veg stock that you can freeze in beakers for easy use just my two bobs worth anyway