Sorry, with people from out of town I lost track. It turned out well, the tenderloins all turned out moist and nicely smoke flavored.
Kevin, I'll have to try that next time. I was afraid I would dry them out.
I marinated them for 4 hours in a mixture of orange juice, tiger sauce, A-1, ketchup and some other sauce(it's in the cooking tips section in Chris' pork loin recipe). I also wrapped them in bacon. The marinade didn't have time to penetrate the meat but I was concerned that the acid would start to cook the meat.