[santosh]

Yeah, that was our one concern about tracking the ball down as well as the speed of the arm.
Regarding the ball moving around, we have some pretty skilled drivers and some sonar sensors that we are trying to use to help us with tracking the ball. We feel that it is just an issue of the drivers being able to get it, not the suction onto the ball.
But yeah you are right, we need a ton of practice because we all know with 6 robot and 4 enormous balls nothing is going to be standing still.