Originally Posted by fuzz nation
A slice bh can sometimes float if your contact point is too far out in front where the racquet face opens up and slides under the ball too much. Get deliberately onto your front foot before your swing, but look to make contact maybe no farther ahead of you than your front knee. Although you hit the ball earlier in your swing, make a complete follow through to help the racquet accelerate through the ball - the hand leads the racquet.
Yup, this is my problem -- contact point too far in front. I have to remember to get closer to the ball. No reaching allowed.