I have never smoked a butt before. I have a great recipe for slow roasting in the oven, but really want to smoke these. I want that nice thick bark on the outside filled with tender and juicy meat in the middle. Should I marinade (the slow roasting recipe I have I marinade overnight with Caribbean Jerk sauce from BW's) or do I use a traditional mustard/dry rub? How long should I smoke them (each is about 7 pounds)? What kind of wood (I have cherry and mesquite)? Advice men, please. Thanks in advance.