any thoughts on this?

[cvsoftball]

The SpinDr

Eliminate the guesswork. The SpinDr, patent-pending, gives pitchers of all ages immediate visual feedback of their spins with a training tool engineered to feel and spin exactly like a full softball. The 7oz and 10oz SpinDr are for all ages 12u+ and are used for different purposes. 7oz: The...

myspindr.com

I believe I bought something similar 3 years ago.

 

[bsbs]

I'm sure it's good. We use a power pod for similar spins at home. I follow her, she seems like a very knowledgeable gal.