The fam said "do it again" (which could have been in reference to me falling off the roof or something, but I'm going with the brisket). So I did another one today, and it came out nice too :D Same seasoning; Coke, worster sauce, and Montreal steak seasoning.
This time, I went to a butcher shop and got a real brisket. The whole thing. Not just the tougher flat end, but also the fattier, more tender point end. It was a "small brisket" at about 10 pounds. It also had more fat on it than the Costco one did. And cheaper per pound, FTW :D
I took some tips from here:
http://www.virtualweberbullet.com/brisket1.html
I cranked the oven up to about 275, poked the meat with the thermometer, put the foil on, and put 'er in. After about 3 hours, the meat temp hit about 180, so I turned the oven down to about 225. I let it cook like that until I got 200* internal, and pulled it out. I would have waited until 205* but it was "time for dinner", ya know. I covered it with some towels and let it rest for about 1/2 hour before opening it up and carving it.
Came out great. The point end definitely has a looser, more tender texture than the flat end does, but the flat seems to have a more intense flavor. Getting brisket figured out is really worth the trouble. It's a really great cut of meat if you cook it right.
Now we need to learn how to turn the meat chunk/Coke/worster sauce/fat mixture into a BBQ sauce. When the weather gets a little better and the days get a little longer, I'll be back outside with the smoker. I will get a good smokey moist tender brisket in 2010. Damn it.