tenene:
There is no such thing as an "instant fade" unless you are referring to disassociation or disfellowshipping. But, if I had to guess, I would say doing it quickly would have the least effect emotionally (in the long run) assuming you are NOT losing family or business $$$. The reason I say "in the long run" is because nobody gets away unscathed. There is always an emotional element to it even if you weren't popular. It is just when it is instant and you know all the calls and inquiries will stop dead in their tracks, the pain is shortened.
Whereas, if somebody does a "slow fade" there are always inquiries and hope you will "come back". But, I am sure if enough years pass the JWs know you are really "out".
The bottom line: It is not a "one size fits all". It varies from person to person and what their circumstances are and nobody should be made to feel they have to "out" themselves if the stakes are very high and the time isn't right. I feel sorry for anybody who has to "fake" it for family. I would be sick to my stomach.
Also, nobody should feel they have to be an activist against the religion in any sort of public way if this is not who they "are". Some people have serious health issues relating to their bad experience in the religion and this would only take their last bit of peace away. It is their privilege to fade away however they want.
Sheep2slaughter:
You are right that they are always "judging" everybody and wow was I judged and panned by these idiots! This made it easy for me to "fade" because they weren't my friends anyway and why would I care now what they think?