Thanks for clarification. I know that IAABO does have a mechanics manual and does a couple of things differently such as positioning on time-outs.

It looks like you only strengthen my point that SOME LOCAL associations alter the mechanics of the NFHS.

From Scrapper1: "IAABO only differs from the FED mechanics on a couple of points (one good and one bad, IMHO)"

Scrapper1: If you have time, can you highlight some of the differences between IAABO and NFHS mechanics? Also, I'm curious, which is the "good" one and which is the "bad" one?

Nevadaref: The Connecticut mechanics I listed are only for Connecticut, and, I believe, they are for two man games. In Connecticut, most regular season games are two man games, the last rounds of the state tournament are three man games.

So your point in posting that Conn info was to support my statement that some local associations alter the NFHS mechanics, right? :)

Thank you.

I'm only aware of two differences in the 2-whistle system (which is mostly what I use).

1) NFHS says for the officials to stand on the blocks during a full time-out. IAABO says to have one official at the spot where the ball will be put in play and the other official at midcourt. That's the good one.

2) NFHS says that the Lead official is responsible for the nearer sideline all the way to the other endline. IAABO recommends an "optional" coverage in which the Trail official is responsible for the Lead's sideline above the FT line extended. When the Trail makes a call on that line, the offcials don't switch. I don't like this mechanic. Mostly just because it's not what I'm used to.