Don't forget extra holes in the fire pan. Playbox sand instead of water for higher temps. My firepan rested between three concrete blocks. Easy to lift the smoker right off the pan to add more coals when need and you didn't lose the heat. Depending on how I vented the blocks, I could easily add air flow. A full pan of coals could deliver 450º, so I was able to cut down on the amount of charcoal I used by quite a bit.