In golf, you'll often hear people say that one person hits the ball further than another because the one person "draws" the ball while the other "fades" it. I want to know why the direction of side-spin could possibly matter?
A draw is when a (right-handed) golfer hits the ball so that it turns from right to left due to the side-spin imparted on the ball.
A fade is when a (right-handed) golfer hits the ball so that it turns (you guessed it) from left to right due to the side-spin imparted on the ball.
Now, I am fairly certain that this phenomenon has to do with primarily two things: a change in flight trajectory and a change in spin caused by these two different ways of contacting the ball.
One of the reasons I say that is that this extra distance gained from hitting a draw on the ball almost always manifests itself in additional roll. That is, the ball that is hit as a draw does not necessarily land further than the faded ball, but it will end lying further by a fairly significant margin (significant in golf being 10+ yards). I imagine that this would mean spin is playing a large role (i.e. more or less backspin) combined with a different trajectory (a shallow trajectory would likely result in more roll).
Which leads me to what I find to be the interesting part of the problem. This shot which is hit as a draw will often fly further than the same shot (meaning same force applied to the ball) if the ball is hit completely square so that no side-spin results from the shot. It seems to me that both the draw and the fade should result in a deviation from the "no side-spin shot" by losing total distance, but this is not the case. One possibility for this is that the shallower shot trajectory of the draw may actually be a "better" shot trajectory than the "no side-spin swing".
Some details which may be useful to know, the usual loft (angle away from 90 degrees) of a driver is 9.5 degrees. Meaning that this club face would be 99.5 degrees from the horizontal (that information might be hard to use though). Also, drag plays a significant role in a golf shot, so maybe there is less drag imposed on the drawn shot which improves distance somehow.
My problem is that I don't understand drag and have no formal education on the Magnus Effect and haven't gotten around to reading about it.
I hope that the answer to this manifests itself in interesting Physics, rather than just being impossible to answer at all.