So I used to have boost mapped to the press the mini-joystick on the CH Throttle, which normally controls lateral thrust, and toggle head look on Down on the front 4-way switch, with rudder on the left and right of that switch. Only I kept toggling headlook by mistake when using rudder for fine aim in dogfights and then headlooking somewhere useless trying to lateral thrust, so I swapped headlook and boost. That was a mistake. My muscle memory kept trying to toggle headlook at the most inopportune times, so I totalled two ships by boosting into them, and lost one expensive cargo. Lesson learned, the controls are now on completely different buttons.