Ok I am doing a prime rib dinner tomorrow for 20+ people...How long does it normally take this cut to get to 140? I was talked into doing this so I am shooting in the wind on prime ribs them selves. Their are 2 chunks both weigh about 30 total so about 15lbs or so each. What kind of rub/seasoning have you all done on yours? Anyone use mad hunky on one ? One more question I have never smoked potatoes but will tomorrow so am curious on how long a medium to large size baker potato takes to be done??? I can't believe I am doing 2 things I haven't done on a smoker for 20 people for the first time and to top it off it's all on a smoker I have never used either :faint: thanks for any pointers you have !!!!!!!