We've got an MES 30 smoker. Our rookie effort with a 14 pound brisket came out so good (please don't let it be beginners luck) that the neighbours have begged us to do a party - so we're going to smoke about 28 pounds of brisket this weekend. Give the size of our smoker, last time we split the point from the flat and smoked them stacked on top of each other. I plan to do this same this time - just spread over 2 racks with a flat and a point on each. The big question - how long do we need to allow to cook this? I say that the time should be only a bit longer - we'll still be cooking meat that is about the same size, but just 2 racks of it. Am I way off base?