I suggest you tell the man that the drop zone operator wants to make videos of his landings, so when he blows it, and he will of course, that it will be on film and can be used to train others about the dangers of low hook turns after he is gone (dead).
Then do it, have him filmed durning each landing, so you can do just that, use it to teach new and improving jumpers about the danger of low hook turns, high speed and overconfidence.
You can't save someone too overconfident to listen, but maybe you can save someone from makibg the same mistake later.
Of course, the best way to deal with the situation for the man while he is still alive is for the drop zone operator to just refuse to let him jump there.
dago
