On the delay of game signal (NCAA), it shows it to be cross your arms in front of your chest, yet when I work chains, I observe most crew chiefs use the NFL signal <Arms on top of one another>.
What is the correct signal to use? I don't think I have ever seen the crossing of the arms in front of your chest in any college game for that matter, yet they put it in the rulebook?
Please help me demystify this strange phenomenon before I land