Originally Posted by Chas Tennis
You have an idea of what caused your problem. Have you taken videos of your serve?
Most people don't have cameras that do high speed video. You possibly could get some useful videos with a DSLR camera with 60 fps or even a Smartphone in bright sunlight. But at 30 fps you would have to repeat the same serve several times and assume that the serves are similar in order to catch the various parts of the stroke.
Other people have question some of your stroke techniques so maybe videos would show you some stressful stroke motions.
In add to his opinion..
Use the "ubersense" apps to see slow motion of your serve or forehand you took with iPhone.
It's great apps to see how you strike the ball.
- Hit harder, run faster, play better, live happier!!!