Recently my DD attended a pitching clinic hosted by a local small college. Participation was limited to players 13 and over (so, experienced participants) This was a 2 and a half hour clinic.
first 30 min - stretching and jogging
next 30 min - wrist flips
next 30 min - various drills for footwork
next 30 min - long toss
next 30 min- full pitching with individual pointers
All of the coaching staff and current players on this college team INSISTED on the HE finish, my DD must have been corrected 100 times during this clinic. At one point she told the staff that she does not pitch the way that they instructed. They asked her to show them how she pitched, so she showed them slow motion IR mechanics, stressing to them the importance of palm up at 9:00. The staff pitching coach told her it was impossible to pitch that way. LOL.
The coup de grace was after the instruction was over, the staff (current pitchers for this team) threw pitches to show the girls how it was done. Every one of them threw with good IR mechanics with the FAKE HE finish long after the pitch was released. It is truly amazing that people can teach pitching the wrong way, and then pitch correctly thmeselves without even knowing it.
Rant [x] off
Sorry, but just because the person divvying out the instruction is a college coach, doesn't necessarily mean the instruction is in harmony with what the best/elite pitchers do.
It's amazing how much questionable info is still out there, even by college level coaches. I swear some of them have never studied video of elite pitchers. It seems to be the result of not being curious enough--being lazy or something.