Here's how I do it for caterings;
Full Deep Steam Pan, 1 #10 can baked beans, 1 #10 can great northern beans, 1/2 #10 can pinto or black beans, ~ pint of black strap mollasses, ~ pint of Sticky Pig BBQ Sauce, liberal sprinkling of onion powder, handful of rub, handful brown sugar (I have big hands), and ~ 1/2 pound pulled pork and / or brisket trimmings. Uncovered in pit until thick. Maybe 3 hours at 250.
2013 Insane Can Posse Tour
Gateway BBQ Store
Blues Hog BBQ Company
Plowboys BBQ Company