I just smoked 2 pork shoulders last Sun. Rub with salt and pepper only. Smoke at 250F until internal temp is at least 190F, usually 8 - 10 hours except during the winter when it can take longer. I used to smoke in an offset firebox barrel smoker using wood and/or charcoal. I liked lump charcoal but it burns faster and hotter than regular charcoal. Just don't use lighter fluid soaked charcoal. It imparts the taste to the meat. Last year my brother-in-law bought a Smokin' Tex electric smoker. After I finished laughing at this breach of purism, we tried it. Friends and neighbors I'm here to tell you that there is no difference. It's the rub and wood that makes the difference, not the heat source. I immediately sold my wood/charcoal smoker and bought an electric smoker. The beauty is that you load it up, set the temperature, insert an internal thermometer, close the door, and walk away!! I use wood pellets which work extremely well. I spray the meat with apple juice and a vinegar/V8 juice/red pepper flakes mixture several times during cooking. After several hours, I wrap the meat in foil to lock in the juices. Any PP which isn't eaten when cooked, is vacuum-sealed and put in the freezer. Freezing has no effect on the PP. Our friends actually ask for PP when we invite them over. Serve with your favorite BBQ sauce and cole slaw, either on the sandwhich or on the side.