People have shown a (surprising) interest in seeing the mods I did to my BBQ Smoker, which is the Char-Griller 5050 Duo Gas-and-Charcoal Grill with a side firebox added. We use the charcoal side almost exclusively for smoking big hunks of meat but I have noticed some shortcomings. Apparently a bunch of other people have too, and I found some great ideas for fixing things up. The biggest problem has been keeping temperature up, not surprising because of the relative lightweight nature of the smoker, and I wanted to address this so I could help keep the temperatures stable.
My idea was to both add thermal mass and to increase the time that the smoke/heat stayed in the cooking chamber. The first addition was to add a 3 inch water heater...