Surely the first mistake was attempting a manoeuvre not in his flight plans and unknown to the organisers ?Incorrect, read the AAIB report. He did not bail out, pilot was still in the aircraft when it hit the ground.
If you hit the ground at the bottom of a loop there is no choice where to "put down". It's a very different scenario to the WW2 bomber that had time to select where to ditch.
Please don't get me wrong, I'm in no way defending the lack of flying skills of Andy Hill. His first mistake was insufficient speed going onto his loop assent, this then ment his second mistake was the top of his loop was too low. If he'd glanced at one of his two altimeters he would have known and aborted the manoeuvre at the top of the loop, his 3rd and fateful mistake. Once committed to the loop descent, he was doomed. He ran out of altitude and it was a tragic fluke that point of impact was the A27.
50 foot higher at the top of the loop would likely have missed the road and hit the field, 100 foot higher and he may not have hit the ground at all.
Sad and tragic misjudgement.