I have a state of the art 2D two camera video system that is high definition video on a 17″ hi-brite screen. Analysis includes looking at the same swing from two different cameras, comparing before and after swings, swinging side by side with pro examples. Each student receives a text synopsis of the lesson along with a video commentary. Each lesson is emailed to the student so you can monitor your improvement.
An important component in any lesson is visual feedback, instant video replay sets the mental image for the student to alter their swing where traditional instruction without video fails. Only after you are able to alter the perception of the technique from the actual technique, will you be able to alter the physical component and begin to build corrections into what is referred to as ‘muscle memory’.