I couldn't agree with you more. I have many years experience shooting non-professionally much of which is even competative shooting and I still dread the thought of teaching anyone else. As a matter of fact the ONLY person I have ever agreed to teach is my wife and that was only because she would not heed my advice regarding professional instruction. This is the best advice I have seen. Nothing is going to be nearly as effective and safe as professional instruction, particularly when given by someone with a background as a police or military instructor.