The joy of this forum is learing how each person goes about preparing and smoking their foods. I doubt there is any single "best" way to do anything in a smoker. As my dad used to say, there is more than one way to skin a cat.
I have smoked about 10 pork butts for pulled pork and done most in a different way. My favorite way has become taking the meat from the fridge, adding the rub, then let it sit on the counter covered lightly with foil while the smoker is preheating. Given an hour or so, the meat has warmed some and the rub absorbed enough moisture to stick. I then smoke for 4 to 5 hours at 200 to 225. At that point I take it out, wrap it in foil, then return it to the smoker with the temp probe in it where I continue cooking until the meat reaches around 195. FTC or just leave in the turned off smoker for an hour or so then pull. The meat is very tender and juicy, the bark light and moist so that it pulls apart with the rest.