Personlly I have found the single best answer to use is, "Well, you may have a point. I will give it further consideration."
Then I promptly forget what they said.
In a case a few years ago I was supposed to read the WT article about marrying "only in the lord" and was hauled in the back room because, "some might be offended because you married a non-jw (thirteen years ago)."
The shearer of sheep that "counseled" me waited until he was the sole "elder" in town to voice his personal opinion.
Now every time any of them ask, "Why aren't you doing (insert whatever order they yammer)?", I simply say, "Well someone just MIGHT be offended by my doing that, and I SURELY don't want to "stumble" any of the weak ones!"
The hypocrisy of the congregation fleecers of the sheep preaching about forgiveness then refusing to practice what they preach was instrumental in my seeing TTATT