Bungalo Bill said:
The exercise above to hit a ball through the fence is good unless you dont want to scratch up your racket. If you want to do that, I would suggest getting a racket you dont care too much about.
But really, all this drill is doing is teaching you that:
1. Pronation happens naturally and should never happen forcefully.
2. This drill tells you HOW FAR YOU NEED TO BE FROM THE BALL so your arm can naturally and fully pronate at contact. So you learn about TOSS LOCATION.
3. It teaches you TOSS HEIGHT for your serve.
For a flatter serve, you want to work on the following:
1. Toss the ball farther in front than you would for a slice, topspin or kick serve and farther to your right for right-handed hitters.
2. Throw your racket out of the "on-the-phone" position (racket rests on shoulder with racket head pointing down behind the shoulder and palm facing the ear), with your palm facing the net at contact with the ball (natural pronation).
3. Hit the ball with your arm fully extended.
Bungalo Bill,
my #1 and your #2 are essentially the same, we just focused on different parts of the service motion. you've got him focused on the (for ease of typing, not technical accuracy) "backscratch," whereas i've got him focused on contact. you're right that pronation should not happen consciously, but neither should "backscratch."
my #2 and your #1 are the same. you're right that you need to have the correct TOSS LOCATION
my #3 is the same as your #3. you're right that you must TOSS to a "fully extended" HEIGHT
i assumed from his original post that his mechanics up until the point of contact are essentially sound and that all he needs to do is learn how to GUIDE his natural arm movements (including pronation) so that his racket will contact the ball square and with forward motion only--this leads to a so-called "flat" serve.
now, as others have pointed out, generally you can't effectively hit a perfectly flat serve (meaning with no spin) no matter what the grip.
a serve is basically a combination of two arm movements.
1. extension--this is when the racket goes in an arc from looking like: d
behind you to looking like: P at contact (an edge-on swing towards the side fence)
2. pronation-- this is what we call the rotation of your hand/wrist as you turn your palm from facing up to facing down. your thumb should trace a small arc from your right to your left (for righty). if you were to hold your racket, the tip would arc around the butt/your hand/wrist
how you combine these two movements defines what kind of spin you get on the serve.
if you #1 extend upwards and hit the ball before you #2 pronate, you will get a topspin serve. you must continue and pronate after you've hit the ball to avoid hyperextending your elbow.
if you #1 extend upwards, then outwards (towards the side fence) then #2 pronate, then hit the ball, you will end up with a slice serve
if you #1 extend upwards, then #2 pronate, then hit the ball, then continue extending outwards you'll get your flat serve.
again, using the "hit the ball through the fence drill" you must hit the ball straight through the fence 1. with the strings only, and the racket flat against the fence and 2. you must not be brushing past the back of the ball in any direction (no topspin, no slice)
btw, you don't have to kill the ball or the fence. as was mentioned, you can do it slow so you don't hurt your racket. don't try to hit the ball through the fence, just try to make contact within those last two parameters