Thanks for all the detailed replies. Re the prop swinging - the RAAF taught us to face the aircraft from the front when swinging the prop. The theory I suppose was that you swung down and away from the plane of rotation while leaving yourself an out by diving away if the chocks did not hold. Swinging from the back was a method I have witnessed with unease, because if the Tiger started to move under its own power you could be knocked over by the leading edge of the wing into the prop arc. But as always it is horses for courses.