George,
Muscle memory is a fact and what you stated about muscle memory is an opinion only. Ten thousand swings one way and 2 weeks in your cage won't eliminate the 10 thousand swings someone does especially someone in there 20's. Another thing you could be late and still hit the ball hard with these mechanics. The stance has nothing to do with hitting ok. Everyone in pro ball uses a heavy bat because when you make solid contact the balls is hit harder than with a very light bat. I'd say the average bat is 34 inches 34 ounces. You never hit before george and you know nothing about playing at a top level. Gary was injured for a bit last year still hit 25 home runs and almost 80 rbi's and hit 265 a down year for him but at the major league level is still a very productive year. He has a career 296 average and like I said before if you hit 280 and above in the bigs you are a good major league hitter. [deleted by moderator]in your opinion still need to change in order to stop failing 7 out of ten times. The real stat is that these same hitters that are failing 7 out of ten times, are hitting the ball hard 7 out of ten times. The more you try to figure out these hitters mechanics that you bad mouth the better off you will be as a coach. Until than you are part of the problem.