For Groggy, I note the ATSB report says this about flight carried out in a Level D simulator for a similar model aircraft:
The pilot who performed the flight commented that:
The yaw on take-off was manageable but at the limit of any normal control input. Should have rejected the take-off. After take-off the aircraft was manageable but challenging up to about 140 knots at which time because of aerodynamic flow around the rudder it became uncontrollable. Your leg will give out and then you will lose control. It would take an exceptional human to fly the aircraft for any length of time in this condition. The exercise was repeated 3 times with the same result each time. Bear in mind I had knowledge of the event before performing the take-offs.
The unambiguous implication of that outcome (assuming it substantially replicated the performance of ZCR) is that it is not physically possible for the aircraft to fly away ‘like a homesick angel’, if the rudder trim is set to full deflection (or at least full nose left deflection), unless the pilot is an “exceptional human”.
Have you any first-hand experience, either in the simulator or the aircraft, of flight with the rudder trim set to full nose left deflection and both engines delivering maximum thrust?