The other guy pretty much stays quiet. I target him -- I tell him I notice he hasn't said anything and it may mean he's not all that sure of himself. I then ask if he has any religious questions or maybe wants to talk to a priest with me.

My other tack has been to express my vague understanding of their belief that only a limited number of people go to heaven -- 144,000. "Now you in the back, you're not really talking much. No offense, but I'm pretty religious and if I converted, I would probably be a better Witness than you. Do you really want to be bringing people in that might knock you down the pecking order and maybe even get you out of heaven?"