> I read once that an efficient paddle stroke is one where the
> paddle is planted in the water and then the hips were pulled up to
> the paddle, instead of pulling the paddle back to the hips. Now that
> I type this, i question the difference... equal and opposite forces
> and all that

The way this was presented to me was more as a way to visualize the stroke to foster good form. The way I was taught was to imagine that your boat is sitting in jello, twist your torso, plant the paddle, and unwind pulling your boat past the paddle. Your elbow doesn't bend too much until near the end of the stroke.

Ross