Trail on Free throws

[Nevadaref]

Originally posted by finnref
According to the IAABO Federation rules manual, the trail oficial covers the players on the opposite lane line except for the first lane space which is covered by the lead official, who also covers the players on his oposite lane line.

This is the same for NFHS mechanics. The lead has both players in the bottom blocks. Chuck and others just simplified it.
Also, as I've said before IAABO does not have a separate manual, they simply reprint the NFHS books along with their directory and some other stuff all in one big book. In short, every rule they follow is the exact same as NFHS.