I know I'm a little late in the discussion, but I use a CharBroiler Double Chef and once you seal the door and keep water in the pan your temps will remain stable under 250. When the water pan empties, the temp gets over 300 fairly quickly. The sealed door also helps your charcoal last longer. I use the minion method starting with 8 briquettes and just dumping them on top of the pile. My Memorial Day burn went over 12 hours before dropping below 200. That tells me for just ribs and chicken I used way too much charcoal. Now that I know how to manage that I should be able to get better mileage out of a bag of Kingsford. Finally, here's a pic of how I sealed the door. It's the high temp felt used to seal the BGE, found a replacement roll at a local bbq store.