[BillyMac]

Old timers like me (forty plus years) are sometimes challenged by this situation. After decades of the old two person NFHS mechanic giving out of bounds calls to the Lead for the entire sideline all the way back to the back endline, it was difficult to teach old dogs new IAABO tricks (above the free-throw line extended on Lead's sideline is Trail's call).

For many, many years after the IAABO mechanic change, pregames included statements like, "Two whistles are better than no whistle", and, "We don't want the ball ending up on the coach's lap with no whistle".

Now, as my generation retires to the sidelines (no pun intended) we hear less and less of such pregame statements, and the "new" mechanic comes easy to the up and coming young guns.