The program was created about 20 years ago, and I bought it then on VHS.
I am a poor Athlete, so I did not notice any improvement then.
I recently purchased the DVD, and had my 13 year old watch it, and
then go play. He has an immediate improvement when he watches certain
parts of the DVD right before he plays - (60 min to watch the whole
thing is too much for him). If he watches a day or two before, I
haven't noticed an improvement. Looks like you need to watch, then
play, then watch etc until you groove what you see into your "muscle
memory". I don't have the patience for such an activity, but I
believe if you do, it can help you improve.
Sybervision was lost by the original founder, and was a multi-million
dollar company at the time. The takeover people ran it into the ground,
and recetly offered it back to the original owner, who is bringing back
some of the old programs now on DVD instead of on VHS tapes. There is no
800 number and email response is slow if you have questions;
so I think he is running it on a shoestring budget with little or no staff.
Most of Sybervisions programs cost a bunch of money when they were
developed in the 1980's. The owner is just selling again what he
created in his heyday.