I finished a butt smoke around midnight one time, decided I was too tired to mess with it anymore, wrapped it in a huge beach towel (still in the foil), folded up two other towels - one on top, one on bottom - put in the cooler for the night. Had a golf game the next morning but woke up too late to pull the butts before tee time. So figure 6 hours of sleep, six hours to golf and get back home. I was dreading that I would find when I got home, but found the butts still sitting between 170-175. Opened them up, pushed on the top of one, the bone almost squirted out! Turned out awesome!