I do briskets for 11-12 hours at 225. Before I invested in the cajun bandit stacker I would do it like this. don't use both baskets or you'll jack up the sides. Where I live the humidity is 80%. I am not concerned about a water pan.
I put my basket on right right side of the performer because the amount of grease from a brisket clogged up the light assist and it took me forever to get it all out. I will load it up with this much charcoal and I don't need to add fuel for 12 hours.
"if you're lookin you ain't cookin"
AM beers and AM brisket