I've been thinking about trying brisket, too. Jim, since you're saying 12 lbs at 1.5 hours/lb, hmm, my math skills are kicking in . . .
take the hypotenuse divided by the square root of the . . . apply the quadratic equation . . . let x = brisket . . . minus the cosecant of charcoal over time . . . therefore . . .
/infopop/emoticons/icon_eek.gif 18 hours?!
(Sorry for being so dramatic.)
So, what's the easiest method for a beginner to get it right the first time? Never done an overnighter, but I'm willing. I also read that foiling for a portion of the cook gives good results, at the risk of offending the purists. (Then again, cooking on a water smoker might offend some purists anyway.) I would also consider doing a pork butt over the brisket. Time to buy that Foodsaver . . . . I also read somewhere about raising the temps part-way through the cook. Not sure what that does.
So what method has the least chance of failure for a beginner like me?
By the way, the only whole briskets I've seen were more in the 9-11 lb range. Anything wrong with a smaller cut? It looked like the fat was trimmed, but not all the way, so probably about 1/8 - 1/4 inch left. Maybe that's why they weighed less?
--Mick