Been looking at upright smoker to save some room and be able to cook more. If cooking multiple items of the same variety, no problem with juices dripping down on lower levels, but if cooking ribs, chicken, sausage, etc. what do you do about not cross contaminating? Use sheet pans with with grilling racks? if so, does smoke sufficiently get to all sides? Do pans heat up and cook bottom too much, or just flip more often?