My last one was large like that, took me 23 hrs even though I started it at 180 deg.. still took longer than expected..All right q Masters trying to smoke a brisket for tomorrow hoping to have it done by 10:00 a.m. . 16 lb brisket how many hours do you think what time should I put it on tonight? Last couple I did came out a little tough so I want to make sure it Cooks long enough