I am cooking a 13lb whole brisket using the l&S method. Being that I have done my last few using high heat, I forgot how long the brisket should take. I read in one of the VWS articles that it should take 1.5 hours per pound. I never remembered it taking that long. I was guessing about an hour per pound. I am aiming for a 5pm dinner tomorrow. Should I go by 1 hr or 1.5? Any thoughts?