New PBC owner here. I've cooked one chicken and some ribs, two different cooks so far, both by the instructions. The 2 hour chicken was good, dark meat could have used another 5-10 degrees internal, and the 3.5 hour ribs were good, a bit tougher than I expected.
Anyway I use KBB and fill the basket, use a chimney to start about 40 of the briquettes. Obviously that is more coal than I need. Barrel temp around 270 with lid on and rebar in.
If I wanted to try a butt or brisket how long should I expect the coals to last? Do I ever need to add more coals during the cook?