What would the best strategy be?
I ask this because thinking about my upbringing, I don't believe what the Watchtower seems to suggest, that the MORE spiritual you are, the MORE bible study you do, the MORE field service you do, the COMPLETER your meeting attendence is, the LESS worldly association your children have, etc., then the more likely it will be that they will "stay loyal to Jehovah" !hurls!
I don't have that many cases to consider, but I have seen youngsters getting baptized whose famailies don't seem to do that much field ministry and miss a lot of meetings.