Doing my 3rd smoke with my SI2 model (previously smoked 2 whole spatchcocked chickens and a 8 lb. pork butt (both came out delicious- love this smoker!) and am going to try a 9 Lb. Turkey breast. It's currently brining away in my refrigerator and am planning to take it out after 10 hours, rinse it, put on the rub tonight, then let it sit in the refrigerator overnight and smoke it tomorrow morning. My question is there any advantage to trying to spatchcock the turkey breast or should I leave whole and stuff the cavity with onion, carrots and celery? I've seen both methods discussed but can't figure out best method?