extensor action- why is it needed?

[fmlutz]

EdZ,

I have that heavy feeling when I am swing well. There is no tension or strain. However, I have never seen this on video so I do not know if there is good extensor action or not, but it does FEEL that way. BTW, I used to be a swinger with more float loading and am now working on hitting and less float loading (I feel none now). Can you still use the sledgehammer idea and hit?

Thanks
Mike