Cool. More like an underwater 'monocycle', though. Make it into a full body struct in Y shape acting as kind of both 'guidon' and secondary propulsion axis -- more blades, an underwater tricycle. :)
> There are two main types of single-wheeled vehicles. In
a unicycle, the rider sits above the wheel. These vehicles
are recognizable by most people. Less well known is the
monocycle, where the rider sits inside the wheel.
