Many officials do not look completely comfortable when they are administering throw-ins. This is especially true when administering throw-ins from the sideline. The problem may be that they try to bounce the ball to the thrower with one hand while they have their other arm raised and poised to chop the clock. Some officials just don’t look comfortable or athletic when they try and bounce the ball with one hand and especially if the ball is bounced with their non-preferred hand.
My suggestion is to bounce the ball with two hands to the thrower. Not a chest bounce pass, but a two-hand bounce pass from just above the eyes. Then when the thrower receives the ball raise an arm to be ready to chop in the clock and show the 5-second count with the free hand.
It is worth remembering that the administering officials get better court coverage if before bouncing the ball, she/he ‘backs off” and gives herself a wider angle so that she can see the action on the court as well as the thrower. Most of the illegal activity on a throw-in is committed on the court and not by the thrower. Don’t be one of those officials that stare at the thrower while counting while illegal screens, holds, and push-offs are occurring on the court.
Don’t forget to tell the thrower to “hold your spot” or “stay put” before putting the ball at their disposal.
In the video clip below the administering official does an excellent job of backing off, bouncing the ball and positioning himself so that he could see the action on the court as well as the thrower