I've two butts on the egg since 4:00 central. They are at 230 dome. They're at 160 internal meet. (Just now starting plateau)
I really don't want to sit up and wait. And of course I don't want them to over cook. Can I just shut it down to a "simmer" and get em off in the morning?
I've cooked dozens of pork butts and had real success. I've also done overnights. I've just never done em where they'll finish in the middle of the night.
Also - I have a friend who cooks ribs and then puts a butt on and leaves it over night over the same coals. Perfect every time. He doesn't own a probe or any kind of temperature device.