Probably beating a dead horse, but I never prep the day before. One, because I'm lazy and two, I noticed no difference in the final product between prepping the day before or prepping at the time of the smoke. My mantra is "simpler is better". I take the butts straight out of the package, score the fat cap (no trimming, remember, I am lazy........and why cut off that delicious fat, it's heaven), rub them while the smoker is preheating and pop them in. Simple. Same with ribs. Out of the package and into the smoker and they are done when they are done. No 3-2-1, no foiling or just general dicking around. I hate all that putzing. I believe that all that goofing around doesn't embody the true spirit of BBQ. I don't think our wise BBQ ancestors did ANY of that. They took crap cuts of meat and magically turned them into a little piece of heaven. And, fortunately for me, that really syncs up nicely with my laziness. I haven't heard anybody complain with the results when they are stuffing their faces as of yet.