I understand that individual associations do different things. If your local association does that, fine. Do what you're told but I don't think we should pass that to others when it's contrary to NF mechanics.

Not according to the Fed. :)

BBR,

Taking your example: Player goes down sideline, cuts across baseline and shoots a reverse layup.

It very well could be the trail's call if he follows it in. At worst, you may get a double or a triple whistle. If the lead never acknowledges he has picked up the play (by squaring up, for example), the trail HAS to stay with the play. The lead may be concentrating on a matchup in the paint, and if the play comes from behind the lead, he may not pick it up until it's past him.

If I'm trail, and the play originates in my primary, I will not let the play go until the Lead squares up and lets me know he/she is on ball. Just because the ball goes into the Lead's primary, does not mean it is automatically picked up by the Lead. And a trail should not assume because the ball goes below free throw line extended, that the Lead had picked it up.

We have been taught stay with the play until you are sure Lead has it. And Lead tells me they are on ball by squaring up to it.

Frank, in the play that I described, the reverse layup would be on the Center's side of the FT lane under the basket. There's absolutely NO reason for the T to make such a call. If you call a foul in that situation and I'm the Center, you and I are going to have a serious conversation at the end of that half.

Trust your partner.

If I was trail, and followed the play the whole way to C's side of the paint, I would probably let it go, trusting that the L or C was awake. and if the shooter got hammered cause the C was watching a match up off ball, you and I are going to have a serious conversation at the end of that half.:D

That conversation is probably coming anyway since you don't know what a reverse layup is. :)