Is it legal, or even possible to have a robot that is essentially a huge square that fills the 36 by 30 by 60 inch dimensions, that is within weight constraints that has arms that extend to then capture all the balls in autonomous mode?
Well, yes, but my creativity comes here.
What if in autonomous, that robot had a mini robot (powered by fisher price motors

) that was tethered with realllly long cables that would run out and trip the 10 point ball. A little "helper" to trigger the release and have the robot cap all the balls.
If i could go back about 2 months... that is what i would start designing
(Rough concept pic attached

)