Autos to the ground are not for me.
In my limited experience, I have first hand knowledge of four autos to the ground that have resulted in serious damage to an aircraft. Three were in training, one was for real.
Maybe we should rethink doing autos to the ground in training??
Now I know my four crashes are hardly a statistically reliable sample but it would seem pretty obvious to me that you are more likely to stuff up an auto in training than you are likely to have a failure of a magnitude that would cause you to need to attempt an auto to the ground for real.