Yeah, I think a lot of people get the coaching/teaching philosophies, but I'm not sure why when bowling teachers or coaches are "challenged," or even simply questioned they immediately go defensive.  Truth is truth, if the student or customer isn't willing to accept it, then that's on them, not really a reason to get pissy or upset.  Is it that the coach/teacher has a reputation to protect?  Is it that they don't like when they're challenged or argued with by somebody that "doesn't know what they're doing?"  Bowlers do tend to have a bit more audacity than people in other sports.  I've seen people argue or debate things with pros before, which boggles my mind.  Are they insulted by a perceived lack of respect?  Or because it's a small, thankless, low profit deal that only really passionate people are involved in?  It DOES make sense with passionate people, they tend to be more on edge with everything anyway. 

I know I get frustrated when misinformation is passed around, but that's only natural.  It makes it difficult when someone is told one thing by a friend, and then you have to tell them that friend is wrong.  Obviously there's a way to do it, but why is it so frustrating when it's not accepted?  Think I'm going with passion on this one.  If you're in the bowling industry or ever have been, it's because you love what you're doing, because there's definitely not a lot of money in it. 

You don't tell a 240 average bowler the throw the ball terrible. Break down the defense, start off with positive conversation about anything other than bowling. Then say a positive statement(s) about their bowling, then work in what you want to suggest, but phrase it in a neutral way. Being a coach/teacher requires pshycology skills also.