No, your assumtion is that the analogy is a perfect comparison...and it is not. Your muscles are not exactly like rubber bands. You stretch them so you can push blood into the fibers that will need the lubrication when you exert them to that point in the full speed activity. If no lubrication exists, you risk injury. (I am not a sports doc, so the terminology is probably off, anyone of knowlege of the exact terms and reason jump in here)

The other point to make is that the "snap back theory" only goes so far. The real power comes from the "constriction" of the muscles as a forced action back to their original position, not a reflex rebound like in a rubber band.

So stretch stretch stretch until you can fold your body into a pretzel!

In golf, our power is generated by allowing the length of a lever (our arms) in a centerfugal rotation (our legs, hips and shoulders) to fling an object (the clubhead) at an accelerated rate into the ball.

* The longer and flexable the arms the better. Stretch them long and give them freedom of a great range of motion from the shoulders in every direction.
* The stronger the rotational acceleration the better. Stretch the back and shoulders...maybe the legs a little)
* The neck has to be like a perfectly lubricated u-joint. Very very relaxed and able to be rotated 180 degrees or more.

__________________
I'm a golfaholic, no question about that. Counseling wouldn't help me. They'd have to put me in prison, and then I'd talk the warden into building a hole or two and teach him how to play. ~Lee Trevino