I'm not convinced that the Avenger is the right platform for the turbulent, low level environment
ISTR that the RN spent a stupid amount of money about 25 years ago on a study to find out why baby observers who had starred in 750 had so much difficulty when stuffed in a goon suit and strapped into the back of a Sea King on a dark and stormy night. Perhaps the Avenger is the right platform for precisely that reason. Mind you, flying clockwise round the Scillies at 2000ft is not, as I recall, a particularly turbulent environment.