If you aim to specialize in flying second seat in a Turtle, Vanguard, Cutty or maybe man turrets as a specialist, this may be the thing for you.
https://www.rotovr.com/
https://www.rotovr.com/
Until you wrap the cables around your legs pinning yourself to the chair and then fall over when you attempt to get a new beer...I dont get it.
My chair swivels, I can already do this at a fraction of the cost by using my feet!