I had plenty of altitude to recover. Seemed like forever that it spun. tried bursts of throttle coupled with any combination of rudder, elevator and ailerons in all directions. I even had time to let everyone around know so they could watch the demise. Have only seen one other plane that did not want to recover from a flat spin like this (a cub) but it eventually would with full right rudder and throttle. I am sure in the right hands it could have been saved but not by my fingers. Craig