I am switching from an eastern to a semi-western forehand grip. Want/need more topspin is the reason for change. I now have to aim much higher with the semi-western grip versus the eastern grip and I have incorporated the windshield wiper follow through. Thus far and getting use to aiming much higher, I can hit fair with my semi-western forehand when I strike a ball that is located between my waist and shoulders. My problems is how to effectively strike a low ball that is below my waist or lower with a semi-western grip. Those low balls are giving me a fit as I seem just to pop it up for the front net guy to kill! Also figure I am limited on racquet head speed on the low balls.