[DonRotolo]

OK, how to use it for example:

You have a battery and motor connected through a push-type switch. Your Hostbot pushes the minibot on to the pole (say, with a pneumatic piston, or maybe a big rubber band...), and the pole presses the switch.

Depending on the rules, you can either use the switch to complete the circuit to power the motor, or you can use the switch to signal the NXT brick to turn the motor on (using the motor controller that's allowed).

Hope this idea gets you started.