[Sintherius]

Originally Posted by dak95_00

As a teacher (not of tennis), a coach (not of tennis), and a parent; I find teaching devices interesting. This thread led me on a 15 minute search and the results are........

The HAL!
http://partners.cardiotennis.com/PDF...IN1CTFLYER.pdf

It is the same thing as THE EYE COACH! Sintherius, you are RIGHT!

If you need more proof, click on the link in this article for the HAL.
http://www.associatedcontent.com/art...em.html?cat=14

I guess you could also just go to http://www.haltennis.com

HAH. VICTORY IS MINE. APOLOGIZE.