when I first left I called bible studies and friends in the org, because I wanted to help get them out. I had thoughts similar to yours as to go about it in a sneaky way. I wanted to help people get out of a cult. It doesn't work. Unfortunately, I believe it takes personal bad experiences and some breathing room away from the hall for people to start doubting and thinking. If they feel like their being tricked or pressured to leave they'll fall for the JW explanation that satan is trying to lure them away or that your a wolf in sheeps clothing. It'll make them draw ever closer to the org. I believe its better to just DA yourself and only give reasons if asked. jurs