OTWO, great thread. Really good thought provoking stuff.
Ultimately it comes down to this: wanting to believe something does not make it so. We should demand evidence, real evidence. Not the illusion or suggestion of evidence such as using the word "evidently" or others like it as if they are the same as real proof.
Hassan suggests that the best way to get someone to wake up and recognized their in a cult is to gently and slowly point out the logical flaws and fallacies of other religions that are identical to those in whatever cult they are in, in this case: JWs. NEVER ATTACK THEIR BELIEFS DIRECTLY! That will only invoke their cult personality and trigger "thought stopping" slogans.
I also think that the teaching of critical thinking skills is another key component. Even then, there are no guarantees that any particular person will wake up. Some people really do want to be led.