3-point shot mechanic

[zeedonk]

Here in South Jersey, we are trained as Trail to notice the Lead's "3" signal, but not to mirror the signal... if the attempt is good, T is to signal the made basket. Truth be told, I'm not sure if this is an IAABO, NFHS or local mechanic.

My understanding of the rationale for this is the L has the shot in front of him in his primary and signals. L's responsibility is to bring the shooter down, T closes down on the shot and can see the signal in his peripheral vision while observing any action underneath. Even if I'm trail and haven't seen the original signal, L is supposed to keep his signal up until T signals the made goal. I try to take a quick look after the shot goes in just to make sure, because there is sometimes a lot of action in front of L as well as a lot of jostling going on underneath, which is my (T) responsibility.

Anybody know which organization can claim this mechanic? I kind of like it. Signalling a made 3 from L's signal makes me feel like I'm doing what I'm supposed to do- and I always try to make eye contact with the table on this play.... just in case.

Z