Thanks for the responses. Should I practice that posted drill even if I don't use s&t? Also, is there a video about how not to prematurely open the hips?
The biggest habit which I find when coming down on the ball is that I tend to lift up my back heel on the downswing before making contact with the ball. I don't know what lifting the heel does, but many have told me to keep it down on...
I usually play better with my friends. When I play with my dad I usually play worse since I'm trying to play better. When I'm with friends, I loosen up and I don't think too much. So I score better.