There are other ways of helping Dubs from within.
Some I cannot mention because Watchtower trolls are here lurking, hoping to discover the methods used.
I will mention that carefully phrased comments at the book study can go miles. You can throw a wrench into many-a-gearbox with a comment connecting two discordant points.
For instannce. "We shouldn't use blood. But we can allow our blood to be separated and only the allowable portions utilized."
This flies in the face of the average dub's understanding that blood is to be poured out and not used at all. Yet if challenged, you can point in the direction of existing Watchtower dogma. All that is left is a personal struggle for the listener.
Now, someone will say "you can't help them"... "they are all brainwashed"...
They would be missing the point. I am not trying to help everyone. I view the Kingdom Hall like a Borg ship. You can walk down the hallway and as long as you don't disturb the wrong ones, they don't notice you. Borg.
For the most part, I view the dubs as background noise. Like walking through a barnyard full of unthinking animals. But every now and then one of the animals says a word, and you backup and ask "can you talk?" ...to see if you heard right. And it answer "yes". So you have found one of the animals that is more than what he or she appears to be. It has learned to talk and think. This is the one, against the backdrop af mindless noise, where your work begins.