Mike Malaska uses the Rapsodo Mobile Launch Monitor to work on his launch angle, which is critical in golf.
Mike is using a 7 iron, and the key is to reach the optimal launch angle. You want it to be around 17 to 19 degrees. When you hit higher than that, you are spinning the ball off the clubface and not compressing the ball. Your ball speed will go down. If you hit the ball lower than 17 degrees, you will have a hard time stopping the ball on the green.
Mike sets up and swings his 7 iron. The mobile launch monitor registers 21 degrees, which is a little too high. He swings again to bring the launch angle down a bit. This time it is 16 degrees, a little under the optimal numbers.
You can play around with different things to get the best launch angle. When using a 7 iron, if Mike wants to bring the ball flight down, he likes to lean a little into his left side, his hands are forward, and he stays on top or even with the ball.
You can always change your ball position and move the ball farther back in your stance. Another fix is to have more angle in your right wrist when you hit the ball, which creates more angle in the shaft.
Play around with these different ways to get the launch angle where it needs to be.