The Frogmats are great. I use them mostly for fish, but they are useful for everything. You have experienced the effect of smoking small pieces of meat. Pork butts less than say... 7 pounds or so... can take 2-3 hours per pound, and the smaller the butt, the more hours per pound it takes. Think of it this way, pork butt just takes a certain amount of time for the connective tissue and collagen to convert to gelatin. Regardless of size. Whether you have a small butt, or a large butt, this conversion process just takes time. So cooking/smoke time is not necessarily a mathematical formula based on weight. The smaller the butt, the more hours/per pound it will take. Or... a 6 pound butt might take the same number of hours as a 10 pound butt, just because of the collagen to gelatin process that needs to happen.