the way I make pulled pork:

In the crock pot, about 2lbs pork roast
2 onion slices under the roast
garlic, salt, pepper, cap or so of liq. smoke
2 more slices of onion
Add water
cook 5hrs or so
drain fluid
pull the pork apart w/ forks, add bbq sauce and more liquid smoke if needed. don't go overboard tho.