This power rudder idea seems like a concept similar to Azimuth thrusters found on modern cruise ships. Except the motors are mounted ontop of the steering gear instead of inside the pods.
As a QA/safety guy, I'm having seizures watching these guys work without PPE. Still though, really interesting video and inspiration to create my own, albeit gas powered, cocktail launch from a free Clipper Marine 21 hull I was recently given.
