Originally Posted by Sintherius
Trust me it's the same thing. My tennis pro showed it off last summer and said it would help us deploy topspin and also concentrate on the ball more. Said it was called the eye coach. His was also yellow and black, the exact way you described it.
The contraption, according to my pro, is called HAL (for Hit and Learn).
So it is not the same thing.
I could not find a pic on the internet. Perhaps they do not make it anymore. As I said, he bought it some time ago in Florida.