Foul tip in the dirt mechanics and help?

[Dakota]

Originally Posted by teebob21

Luckily, I've never had this happen to me or a partner, where a foul tip is judged caught when in fact it was not. What is the correct softball mechanic on a possible third-strike play like this one?

Denorfia gets a second chance | MLB.com

I think the PU should signal foul tip every time (I do) so that the base umpires know immediately that was the ruling. Should the BU volunteer some help without being asked?

Around here, the BU will generally use an umpire-to-umpire signal, arm at side with closed fist (caught) or open hand (not caught).