@briancole You can't expand vertically unless your in the expansion zone, which isn't anywhere near the flags, thus most robots are using flywheels low to the ground so they can shoot while not in the expansion zone.
Yup. Not sure if it's most robots, but that wouldn't surprise me; and I think there was a survey and it was more than 50%.
@skhan21 I believe because the robots are required to be behind the white line in the image below when shooting balls
For clarity, you can shoot from anywhere. You just can't expand vertically to shoot from high up unless you're in (defined by part of the robot touching) the expansion zone.