Curious why you focus on the top half of the ball? I hear this a lot but have never seen an explaination as to why. Seems to me that if the ball is dropping (and most do) that focusing on the top half will result in a ground ball.I have used it with my girls for the same thing. I bought the portable stand with it too and have brought it to tournaments. Its a nice tool for warming up.You swing one wrap early and its a high pitch and one extra wrap late and it is a low pitch. It isn't always the same height as that changes based on how high or tight it wraps. Not something that is going to change someone's swing or show you too much about their swing, but used the right way, it is good for warming up, focusing on the top half the ball, giving reps without needing a pitcher and instilling confidence in the hitter right before their AB.