How to use your new SpinFins
The best thing about a SpinFin is that it can completely be placed in any position on the softball. We like to say place in a position where the dominant finger that needs to feel pressure can be utilized for the pitch you wish to work on.
It can also be placed for the sole purpose of seeing the direction that softball is spinning.
Disclaimer: SpinFins are not intended to be used for full pitching, use for spin work and switch to a softball without a SpinFin prior to throwing full pitch.