Wish it had been 47 here last week when I did my last one for a church dinner. In addition to being in the mid 20's, it was fairly windy and had a hard time keeping the temp steady to smoke, even with another big grill as a windbreak (using the 940x with SMK attachment). Finally gave up, double wrapped in foil and finished in the oven. Just wasn't the same, and think it didn't get warm enough (certainly not enough smoke) in those two hours to make it act like a real butt. Very disappointed. I eventually got it pulled, but the flavor was far from what I expected.