Woo ..... Look what I just got! My wife said I'm going to build one for my son. He's already happy. This one looks like about 300 gal. more or less. it's 30" diameter and about 117" long including domes. Any help in laying out the end cutout is welcome. I think I'll do a more conventional reverse flow smoker. The trailer is a 28" camper with 3500# axles. Plenty heavy enough for this build. I'm also planning to have a grill at least 4' x 4' at one end, probably the front. Still have to locate at least 2 sheets of 1/4" plate, but it will come.