Things the Mechanics Manual Doesn't Tell You

[ilyazhito]

Good communicators usually equal good officials, so how do higher level officials communicate, if not in the ways described in the manual? I've seen videos of varsity crews both using and not using the 1 minute and other communication signals, so it's not as if higher level crews toss the manual in the trash all the time.
That said, what do you do that differs from the book, and what is your thought process in doing so?