I agree with Charlie. My club has over 200 members. People do the stupid things, so anything you can do to ensure that someone isn't going to plant their plane in to the pits or parking lot is a good thing.

Our overfly zone is actually only 300 yards or so from I-95, and we border on a couple of other busy local roads. (you can see the planes in the air from the highway if you know where to look). We've had to take precautions to prevent some yahoo from putting a plane down on I-95. One guy actually did crash a plane on the far side of the highway once. Just once though. So there's no way we're going to turn loose someone who can't control their plane, it's just way to easy for them to hury someone or cause us to loose the field.