I made an attempt at a low and slow boston butt cook overnight. I put it on about 9 last night after my temp was stable at about 260. Platesetter and drip pan in place as well. My concern is that when I checked it this morning almost all of my coals were gone and the temp was around 150. When I started the fire the coals were above the fire box ring and I am not sure where I went wrong. By the way the butt looks like it is done but it did not cook as long as I had planned. Rookie mistake? Any ideas are appreciated since I will be cooking 3 butts next weekend for guest that are coming to town for my wife's graduation from nursing school.