Well I put my first pork butt in the smoker the other night and 22 hours later, WOW. It was a 6 pound boneless butt. I rubbed with a light coat of mustard and some Butt Rub. Took a few hours longer than I expected but the family really liked it. It could have used a little more smoke though, so I ask. Do you add smoke at the beginning or the end of the cook time?