2019Dad posted:cabbagedad posted:He is right hand dominant. When he switches to hit left handed, the immediate area of strength is going to be power because his strong right hand becomes his pull hand. I would venture to bet that he also pulled more balls than usual. Not at all uncommon but not a reason to switch. As he grows in size and strength, he will develop power from the right side while maintaining all the other benefits. RJM lists several strong reasons not to switch.
Cabbage, I hate to disagree with you, but the top hand is the power hand, correct? At least that is what Ted Williams used to say -- I thought I remembered that so I just googled it and found this: www.nytimes.com/2002/07/06/spo....400-dies-at-83.html
"A natural right-hander who happened to bat left-handed out of his 6-foot-3-inch frame because that was the way he started swinging when he first picked up a bat, Williams threw and did everything else right-handed. He said batting wrong-handed cost him power because it was the top hand on the bat, the one nearest the impact with the ball (in his case, his weaker left hand), that provided a swing its power."
P.S. -- I don't disagree with your advice not to switch, BTW.
2019, love the reference! Let me expand and better explain my comment. First, let me start by trying to lose any credibility I may have... 
. I have been through Williams' book several times. Obviously, he is one of the greatest hitters ever and, yet, I still disagree with a few of his statements and teachings as it relates to teaching youth hitters. I also question part of one of his quotes that you used.
"...top hand of the bat, the one nearest the impact with the ball, that provided a swing its power."
Well, IMHO, as things have evolved, I think we've learned that the power in the swing actually comes from many sources, including much of the lower half, core rotation, bat speed, overall leverage, swing efficiency, overall strength, etc., and not the least of which is to be able to put all these elements together in proper sequence.
Back to my original comment... In regards to top hand vs bottom hand, I believe they are working very much together to provide their part in power optimization, both having a relatively equal role. However, prior to a player reaching the point where his swing is fairly well developed, the stronger hand/arm will tend to carry the load. Therefore, if a player, at any level, starts swinging the bat on the opposite side of what he is accustomed, initially, until he puts all the pieces together, his strong hand/arm will tend to carry the load, thus more pull and often more pull power.