In for off, let go of the plane while it's idling and check for control surface movement. This verifys that the switch hasn't been bumped to off. I lost a day of flying the other way, because I had it pushed in for on and when I put the plane in it's cradle, it got turned on and used up the battery. I changed to the in for off and have never had a problem.

Again this is one of those "what ever make the most sense to you" things,