Aiming in MP3 is done through the IR pointer. I loved that game. It has the best FPS controls on the Wii. But it has absolutely nothing to do with gyro aiming.

With gyro aiming you do the large movements traditionally with the right joystick and only make micro adjustments with very small natural tilting of the controller. I thought I wasn’t using it until I deactivated it. It has nothing to do with picking up the controller and pointing it at the screen. It has nothing to do with making any gestures. An outside observer might not even notice that you’re using it.