Marinate overnight in a glass dish. Remove from marinade, wrap in foil tightly. Bake at 325* for 3 1/2 hours. (I cooked it in the crock pot with the marinade for 8 hours on low)
Chill thoroughly and slice crosswise. Chilling it helps it keep its shape. To reheat, either use de-fatted marinade poured over sliced brisket at 350* for 30 minutes.
For BBQ Sauce, whisk all ingredients together, (catsup through hickory smoke) and heat in a saucepan over very low heat.