I'm lookin' at smokin' 4 butts this week as well. Are there any guidelines about rotating the racks? I assume that the butts closest to the heating element will come up to temp a little faster than the ones above it, correct?
When you "finish" cooking meat in the oven, do you use "convection bake" or just regular "bake." I think convection gets a more even temperature throughout the oven, but I worry that the moving air might dry out the meat a little bit.
FLBentRider - what was your total cook time when you did 4 butts all at once?