For those who want to try their hand a smoking, here's a nice easy way to jump into it.
I used a pork loin from Costco. The whole loin cost just over 15 bucks, and will easily feed 12 people. Remove the loin and cut in half. Make a marinade of 1/2 cup canola oil, 1/2 cup dijon mustard, 1/4 cup worcestershire sauce, 1/4 cup rice wine vinegar, 1/4 cup cider vinegar, 5 garlic cloves, 2 Tbs. onion powder, 1 Tbs. black pepper, 5 stems of fresh thyme, 3 sprigs of fresh rosemary, 1 Tbs. salt. Put all in a blender and let it go until it's well combined. Put it in a 2 &1/2 Gallon Zip-Lock bag and place both roasts. Seal and make sure the roasts are covered with the marinade. Let it sit overnight or two days is even better.
I used a bullet type smoker, also known as a WSM (water smoker). Weber and Brinkman are two of the most common makes. They are inexpensive and are very versitile.
Take the roasts from the fridge and leave them out while you prep your fire.
Fill your chimney with lump charcoal. Light your chimney and set up your fire pan with lump charcoal. Fill the water pan with water. When the chimney coals are glowing, dump them onto the coals in the firepan. Spray the grills with canola oil. Add one roast to the bottom rack just above the waterpan. Spray the other (top)rack and add the other roast. Insert a probe or meat thermometer to the top roast. Place the chamber onto the firepan and cover with the lid. Let it go until the roast temp gets to 150-155 degrees. Remove and place in a pan and cover with foil. Let the roasts sit from 45 mintues, or up to 3 hours. They will still be hot. Slice and serve.
You get a nice juicy product, that is tender, with a subtle smoke flavor.