One bot in each section could easily be countered if two or more robots gang up at mid and keep that bot from feeding into their goal.
I feel like the only arrangement that is near unbeatable, along with totally improbable, is two robots near their goals and an AMAZING defensive robot that can chip the ball from the opponents side all the way across the field, and to supplement that one of the robots in the goal section could drive to the middle to herd balls if necessary. But again... that is tough to do since it is hard to imagine that one robot can handle three.
Also if all three robots go to the middle to steal away balls and cause havoc on the other team will be maybe not unbeatable but just funny. Actually, if all three robots can score from the middle, it might be a better strategy than if two stayed at their goal and one at their opponents goal...
