I've used my Weber Genesis to smoke chickens, butt I wood like to try a Pork Butt. I'm still in search of an actual smoker -- propane or electric, but I think it is too early in the season for a good selection. So, any suggestions for smoking a butt on a propane grill. Time? Temp? Wood chunks? Process? Wrapped? Unwrapped? I already have a great rub and a great sauce I using for butt in the oven, so I'm part way there.