I am new to smoking and have a Brinkmann electric smoker. I am having a fairly large group in for Thanksgiving and will need two turkeys. If I were to smoke two at once, does that increase the time significantly, or once the smoker gets to temp, everything smokes as usual. So, if my temperature chart says a 12 lb turkey will take 6.5 hours, how long will two 12 lb turkeys take? I know these will be estimates, but appreciate the wisdom of the experienced smokers.