[EricH]

Originally Posted by Petey

I bet it'd be hard, but I'm pretty sure it's possible. You don't need a square chassis, all you need is a way to construct your back end in such a way that the sides of the hexagon abut the back end of your bot while the trailer tongue is pulled pretty far in while also observing the other rules about attaching easily and not hitting the walls before bumpers.

Bumper perimeter is defined as the outermost polygon in the bumper zone. However, you only need 2/3 of it. I'm sure you could come up with something like that.