Rules clearly state that a dribbler has violated when he steps OOB, regardless of whether he is touching the ball when he does so. I think that if he obviously dribble passed to A2, then this is fine, otherwise it is a violation as soon as he steps OOB.

hrm....
 

so, if a1 is dribbling lets say, under the basket with no pressure, runs over to the sideline, steps out of bounds, then runs back and resumes the dribble (indulge me here) then we have an OOB violation?

The OOB has occurred during the un-interrupted dribble here. Could that be right?

Say there was no pressure. Say A1 is dribbling in the back court. Girls high school with a shot clock. No defensive pressure. Player is dribbling in the middle of the floor at the free throw line in her back court....

Dribbles the ball HARD into the floor! (so that the ball pops up into the air 20 feet) Runs to the sideline to give her coach a string that she found on the floor. Steps OOB and hands it to the coach.... then runs back and resuscusitates her dribble.... thats an OOB violation?

You call it when she steps OOB? or when she resumes her dribble?

Agreed, that was my point.

"Normally" a person causes the ball to be oob when the player is oob and touches the ball.

But, assume we had a dribbler who, with perfect rhythm, would step on the line when the ball hit the floor, and step inbounds when the ball hit the hand. This would be legal if we didn't have the "dribbler rule" in place -- and could give the offense an advantage not intended by rule. SO, the NFHS added the rule / commetn (whateverit is).

Call it with that intent.

I'm all good with that
 

Player is dribbling up my sideline. I'm trail.
If I see the ball touch oob or the dribbler's foot touch oob it is a violation.
The rule is straightforward here.