"I was with Randy up in Bloomington and I had the chance to see him using GroovZone on his guys with their volleys. I was quite impressed with how it helped them out instantly. I really think that GroovZone has great potential. The main reason is that with the advent of high tech racquets, players can get immediate mediocre results with poor technique and often badly constructed strokes. I’m sure that in your coaching you have found the need to come up with GroovZone so that technique can once again become a fundamental building block of the game. A whole new generation ready to benefit from this product."

"GroovZone enhances the learning of all the tennis strokes quickly and easily. Groovitte interacts with the hand and wrist to induce correct technique, biomechanics and footwork. I have found GroovZone to be very effective in tests that we have conducted both as a self learning tool as well as a coaching aid. I recommend GroovZone for all levels of players be they beginners or pros. Coaches will find it to be a most effective teaching aid for all strokes. Their students will have a lifelong partner for keeping their games in the groove."

"I have just come back from a session with a professional coach. He was somewhat skeptical at first, however he had a student with a problem forehand that he has been unable to resolve. We placed GroovZone on and after a few minutes he was playing “perfect forehands”. The transformation was amazing. The coach could not believe it and the student was beaming with smiles. WOW."

"GroovZone works on the subtleties of tennis and not the gross errors. The concept is genius."

"I have been using GroovZone on my game and have found it an extremely useful tool keep my game in the groove. I have played top junior level, NCAA Div 1, Davis Cup and the Pro Tour and have no hesitancy in recommending GroovZone for all levels of tennis. I still use it. Helps keep my game in the groove."

"I have been involved in sport all my life as a player, teacher, organizer. I have never seen or used a product that even approaches what GroovZone does. You learn in just five or six swings what you might never learn correctly. All that is required is to relax your arm and wrist till it stops reacting, fighting the device. Takes a half dozen swings. The muscle memory is instant and permanent. GroovZone also makes you aware of the correct point of contact. This awareness induces use of the feet and knees to achieve that point of contact. Use of the larger muscles of the body is also induced. I have found that the pronation of the wrist on the serve is learned instantly. I cannot overstate the value of this, having tried this personally and with my students. It works for me in cricket and golf and should do so in any sport that requires muscle memory. The dial that adjusts the angle of the wrist is extremely useful. Highly recommended."