I want to smoke a pork shoulder this weekend...but I have so many questions. What is the difference between bone in pork shoulder, and pork shoulder picnic cut? Besides $1.50/lb. Also, I've seen so many differing opinions on this...I know that the meat tells me when it's done, but I've seen 1 hour/lb. and I've seen 2 hours/lb. Which way should I lean?!