The RIGHT SHOULDER AREA is very important to the athletic motion of any right-handed competitor.
From the top of ANY baseball swing, boxing punch, football throw, etc, the SHOULDER AREA has to go some place (because totally stationary is deadsville).
In the golf swing—
with an effective pivot—the SHOULDER AREA will provide two VERY IMPORTANT things:
Direction.
Power.
For example....if you are a hooker, plagued by underplane and out-to-right-field clubhead path, you need your shoulder to help you swing more left. So...the shoulder has to go more toward your left heel from the top, and less toward your right heel.
Most folks who come "over the top" need to feel like they put in in their right pants pocket to stop roundhousing.
Get it?
So, ideally, where do you want it to go?
Same place as the clubhead—DOWN PLANE.
The ball is down there, down-plane, and all force should go there as well.
The use of a laser CAN help some folks do a better job.
Here's how:
At the top of a posed swing with the right hand only, use your left hand to point the laser from a spot just in front of your right shoulder toward the plane line (out to the far right of the ball).
Then make movements TOWARD the ball, keeping the laser pointed to the line.
In lots of patterns, the laser won't go all the way through on the line, for various geometrical reasons. But I have rarely seen anyone hurt by trying for all the way through. The best LPGAers do this.....'cause they
can.