How to use your whistle?

[Official99]

You should always have a nice strong whistle. You will see some officials use a double or tripple tweet for their travel calls. I find myself doing this, but it is just out of habit at this point. I've also had an evaluator from the Patriot/Ivy League write a negative comment because of the double tweet. If you are begining, just blow one whistle.

In a call where you are trying to sell it, I think a whistle that last a little longer than your normal whistle will help. But blowing it five or six short tweets, I think just makes you look like an idiot!

Just make sure your whistle can be heard by all.