[Rich Ives]

Let's say the ball is hit high off the plate, we've all seen this, right?

Yes.

When have you ever seen a batter get to first before R1 discovers that it wasn't a fly ball?

It happens in youth ball.

What was the first base coach doing?

In youth ball there's a good chance he's daydreaming or not aware of the situation.

If R1 didn't see it, surely F3 did and knows he has to get ready for a play.

But even if there's going to be a play, it's obstruction if it happens before it starts.

Even with a hit and run, I can't concieve of this play happening on a 90 ft. field.

It could happen in the 13-14 age group.

Since we were discussing OBR, this can't be small ball on a 60 foot field, can it?

Sure - most youth leagues use OBR based rules. The only one that doesn't is AAU.

I can't recall ever penalizing an eight year old for obstruction

And most umpires at that level wouldn't call it because they're rank beginners and probably don't know it when they see it.

and most of those leagues don't allow lead offs.

Not relevant - a leadoff isn't necessary to make the play happen, and anyhow, as soon as the pitch reaches the batter the runners can leave their basees.