Use of whistle on TRY

[Bob M.]

REPLY: My own preferences for Fed kick tries...
1. If the kick is in a high trajectory and long enough to ensure that it will clear crossbar height with room to spare, I blow as soon as the kick crosses the goal line.
2. If it's in a low trajectory, I blow when it passes me (BJ/LJ on endline).
3. If it's a high short kick where there's question as to whether it will clear the crossbar, I wait until the ball becomes dead by rule. The last thing I want is a whistle followed by a defender tipping the ball over the crossbar.

Truth is these things happen so fast, it really doesn't make a whole lot of difference if you wait that extra half-second or so.