one other thing i was going to suggest is don't get obsessed with maintqaing a perfect, constant 225 or whatever. it's hard enough to do that during the day in perfect conditions, let alone during an all-nighter. i pulled a couple over the last summer and they went by pretty well. i ahd a good time even though i was alone. if your temps get up in the 250-260 range, no big deal - don't worry about it ebcause that is a fine temperature and it will go down soon enough. relax and enjoy the evening. if you have company, so much the better!