Finger Whistles or not?

[Forksref]

Originally Posted by HawkeyeCubP

I would like to hear from as many as want to reply the answers to the following questions:

1. Do you use a finger whistle?

2. Why or why not?

3. If you work high school and college, do you change or use the same?

1. No
2. Because of the problem of giving signals. I assume the purpose of the finger whistle is to avoid inadvertent whistles. I drop the whistle out of my mouth after the snap and free kick. No problem with IW now.
3. No difference.