When I first set the system up on our car, we had planned on having the capability to open 1 chute or 2 depending on the track length. In the end we decided to have both chutes pop EVERY pass regardless of the track length or situation. We considered the expediency factor as well and concluded that driver SAFETY trumped all no matter what. We also set it up so that the driver could not shut down the system (override) via the power switch. If necessary to kill the car in case of emergency etc., all the driver needs to do is hit the safety button and everything turns off (fuel, ignition, chutes pop).