I was golfing the other day, and I was trying to adjust for the hook in my ball. I figured that the area in front of the ball would have a higher concentration of air molecules (more pressure); because of this, I figured that the ball's spin would grab air molecules and bring them in the direction which the front of the ball was moving, creating higher pressure where the air was being taken; because of this, I figured that the ball would go towards the area of lower pressure. However, my intuition seems to have failed. Backspin sends the ball upwards, giving it more hangtime. This doesn't work with my theory. Can someone explain to me why I am wrong, and how this actually occurs?