Hi All. Our group operates three Streak Shadow aircraft which are tandem seat pusher types. All have a mechanical isolator fitted outside the rear bulkhead to positive supply from the battery. This is connected to a 1/2" carbon fibre tube running forward through the ceiling of both cockpits, enabling either pilot or passenger to isolate the electrical system with a simple twist of the shaft. Because these aircraft are pushers, all have a reversing camera in the cockpit, giving a clear view of motor and prop operation, both day and night. If nothing else this gives peace of mind being not only able to see any issues, but to do something about it. Cheers Dave.