Well This weekend I'm doing a small 5 lb butt. I usually use the offset firebox on my Char Griller Smoking Pro to do such a smoke. But I am also doing some brats, hotdogs and other stuff too, and I dont want to go through all that charcoal for one butt. Does anyone use they're cooking chamber as an indirect grill, I'm pretty sure that it will work and take alot less charcoal to maintain temps. I'm thinking about just use a small pile of coals in the cooking chamber towards the firebox with a waterpan...then when the butt is about done I'll take out the water pan and grill the brats and dogs directly over my coals. Anyone see a problem with this...I'm thinking that for a small smoke filling that firebox is a waste of alot of fuel and heat.