I cooked the brisket Sunday night. It was in the oven for 15.5 hours covered. I cooked it for another 45 minutes with the cover off. I honestly think I put out the best possible brisket using the oven method. It would have been better in a smoker, but I couldn't do anything about it.
One of the reasons that it turned out so well. It was a great cut of meat. The fat was perfectly marbled throughout the brisket. It was juicy and fork tender. The only complaint (and it was from me) was that I couldn't obtain the type of bark on it that I wanted to. I either think I could have had a great bark, but it would have been dry, or vice versa.
I made my own dry rub. It was fantastic!
A 13 pound brisket is a lot of meat lol!