Our cooker has been condemned and we're waiting to get one next week so instead of a traditional roast I've brought a slow cooker and a shoulder of lamb to put in it. I've never used a slow cooker before so I'm thinking of putting the lamb, veg and stock in at about 8am and cooking on a low heat until around 4.30pm, does this sound reasonable for a piece of lamb which would have a cooking time of an hour in the oven? Do I need to cover the lamb and veg completely in stock? Any help is really appreciated 