Niall, one of my primary instructors was a former Air Cav pilot, and made me land an R-22 several times with his foot jammed firmly against one pedal, then up and around to try the other. We did it several times, often without warning.
I'll always be grateful to him for that.
I shudder to think what a full TR loss would feel like, especially as the green/brown/black stuff got closer and experimentation became a matter of survival.