Ok, so my mother asked if I wanted to smoke a meat for Christmas Eve. I suggested a prime rib. So she went to one of the local butchers and they gave her a beef tenderloin. She could have told her the wrong thing, or they could have gave her the wrong thing. But regardless, I need to prepare a 10 pound tenderloin now. I like the idea of it, since its the better cut of meat. However, I was prepared to smoke a prime rib and have no idea the best way to prepare this loin. I planned on cooking the Prime Rib, low and slow with a little smoke. Tenderloin, in my experience is best cooked hot and fast, which throws a wrench in my plan, to say the least. So any advice would help, but the kicker is it is supposed to rain all day the day I cook it, which could take hot and fast out of the equasion. What should I do? Has anyone had a good experience cooking a beef tenderloin on the smoker, or should I scrap that idea and just use a gas grill on high heat? I can cook it either way, but my preference would be to do it with coal. What do you guys think is my best option?