Held Ball Signal

[Scratch85]

In my pregames with partners, I always ask how they signal a held ball. Whether they come up with the thumbs-up signal or come up with a hand, followed by the thumbs-up signal. I ask this to prepare for double whistle situations.

In conversation with last nights partner, he questioned which was proper. I think the held ball signal is used to stop the clock and indicate the call. I prefer the raised hand first, but I do not believe this is the NFHS mechanic.

What do you normally use when calling a held ball? Is it an incorrect mechanic to stop the clock with the hand before signalling the held ball?