One thing that I'd like to add is the caliber of ball that is being played. For example if it was 12U rec on the above play--I wouldn't call it. Ordinary effort has to include the level of play by the player.
Also, the PU should call the infield fly, but the BU can help by sticking up his arm and pointing up! ...and you should try to call the IF at it's apex, not when it is on the way down! If it's a few feet from hitting the ground--forget it!
