I'm a little confused on when and when not to use a water pan. I have a MES 40" and plan on doing a couple of 12lb birds that will be brined. Knowing that water boils at 212 degrees and I will be smoking at 250 or so, is there any concern that the water will be boiling during the whole smoke process? Not only that but is there a need to be concerned that the water may boil over in my electric smoker? Dumb questions I guess....but go easy on this newbie.