I'm looking at some of your survey returns and noticing a pattern. Most of you are unhappy with your serves. That's good—I'm unhappy with them too.
I'm also unhappy with mine.
For a serve to be effective, everything has to work perfectly and in sequence. One failure along the way and it's time for your second serve. Let's take a look at what has to go right.
*some players with enough strength can get away with this, reaching high and hitting over the top of the ball.
One-hundred serves a day. You asked, so I'm telling you: 100 serves a day.
That's if you want to be good. If you're aiming for decent or okay, I wouldn't practice at all. But then why are you reading this? In our team practices I can't provide time or space for every player to serve 100 times. In addition, serving that much, especially early in the season, can put a strain on your shoulder.
When you're out hitting with your friends, serve twenty times. By that I mean deuce court, first serve. Then deuce court, second serve. Now move to your left and repeat first serve, second serve. Keep going until you've served ten turns from each side; then have your friend do the same. Try to critique each other and look for problems. You're not only practicing your good spin serve, but you're also adding some pace to your second serve. In this exercise you will hit 40 serves, half of them at full speed. You can probably repeat the whole routine two or three times. Rest in between.