A general note
Just for the benefit of fixed-wing pilots reading this thread;
The PIO/PPO issue in gyroplanes is somewhat analogous to the
stall/spin issue for fixed-wing aircraft.
The difference is that a properly-configured gyroplane can be rendered
almost immune to the problem, or at least radically improved.
The problem is that in the U.K., the changes required are not
being facilitated by the authorities.