Hi Captain Blithering, Just ask simple questions to help him talk about his opinions. Don't tell him about your opinions. And act like a total blithering idiot with no intellectual capacity.
Sample conversation:
Elder: I think that you need to spend more time out in FS.
CB: Uh ha, What do you like most about FS?
Elder: It is very rewarding to spread the spiritual food before "Wordly" (non-JWs) people and see how amazed they are with the feast.
CB: Uh ha. What is your favorite thing to say to "Worldy" (non-JWs) people?
Elder: I like to tell them how Jehovah needs an organization for his people and the WTBTS is that organization.
CB: Uh ha. How do the people respond to you?
Peace be with you and everyone, who you love,
Robert