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In my coiling method, what should i concentrate on to keep my CoG in the court even as I rotate away from the court?
I usually talk about the windup as focal points: hip (hip rotation or weight transfer/ground reaction force), belly button (torso rotation or loading into windup), lowest part of ribcage (abduction or heavy spin), highest part of rib cage (transverse abduction or flatter angles), and collar bone (pronation or, uhh, pronation). And then I apply the following rule set.
1a) If you're serving to ad-court, make sure the left leg doesn't lock out as you windup.
1b) The "points" contributing to the windup are usually on the right side of body.
2a) If you're serving to duece-court, make sure the right leg doesn't lock out as you windup.
2b) The "points" contributing to the windup are usually on the left side of body.
BUT, for now, you just may want to try out the following (a la Kyrill.) This will force your body to use forward momentum as you toss and windup.
1) Lift your left foot off the ground
2) Try to execute your service motion, keeping your left foot up until you're ready to strike the ball.
Basically, in the above exercise, if your momentum isn't going into the court, there's no way you can toss the ball in front of you. Moreover, if you try coiling with your back, you'll end up losing your balance. If, however, your momentum
is going into the court, your front foot may start to come down, but it'll also come well, well forward as if you're coming off a pitcher's mound.
Ross
What would be even better still would be pro's who, unlike Fed for example, use a coiling base style with an abbreviated or semi-abbreviated motion!!!
That would be Nadal and Gasquet. Coil platform with an abbreviated takeback. I think it's most natural for you.
You can also try the following exercise to kinda get a sense of the feel.
1) Get a sock with a ball in it.
2) Lift your front foot up .
3) Wind up, then throw with the sock aiming to your right (i.e. to ad-court.) Keep the foot up through the windup
4) After awhile, start observing the belly button and hips, and how they coordinate together.
5) Now, do this with both feet normally on the ground.
6) Repeat steps 1-5, throwing the sock to the left (i.e. to duece-court.)
The above will give you a good sense of the power base for a coiling motion should feel like.