We are starting on the first build, got the door cut out and are getting ready to either build a fire box or use a propane tank we have. Has anyone ever attached a tank to the back side of the cooking tank? is there any issue with this theory? I am hoping to use charcoal and wood chips as smoking woods are not easily available in this area. ( short of buying them online ) The thought was it would be easier to maintain a constant temp with a long fire at the back of the long 200+ gal. cook chamber. any input would be awesome! Thanks in advance!