You tend to exaggerate or say things that you never prove, so I doubt it is as successful as you infer.
Seems to me as if you are trying to brand something on a message board.
I like shot charts too. It's cool. Safe spots to hit the ball..that's nice, but it's not a system to me. It's just basic tennis.
Please help TT Member BruceD get a wheelchair so he can play tennis again - http://tt.tennis-warehouse.com/showthread.php?t=496820