IFF BU Signal Question
 

IIF situation, you're BU. Pop up between 2B, SS, and CF is borderline but you, from C, can tell it's too deep to be caught. Do you ever signal PU that it's not IFF by pointing toward the outfield? Do you assume that if you simply don't point up, PU will assume you are telling him it's uncatchable.

No. If it's too deep to be caught, then F4 nor F6 will ever be "comfortably under the ball."

I was taught that the umpire who has catch/no catch should be the one who signals IFF first. The other ump echoes the IFF.

In this case, it's up to the BU. So if the BU rules that it's not an IFF, then the PU would have nothing to echo. No signal needed.

I tend to agree.

However, if the BU forgets that it's IFF and it's obvious to PU that it's going to be caught with ordinary effort, I see no problem with PU calling it.