[birdie_man]

I think it has a lot to do with setup too.....I like to feel like I'm leaning back (towards heels) a bit

Then you get into on-plane rotation (force) of the actual Swing when it's in motion.

...

I LOVE the image of the hammer-thrower spinning on his HEELS....(it's not as extreme as that in the golf swing....but that's the jist).



Then Chris Farely over here:


This one is veyr extreme (in how far he's leaning back) but imagine what that feels like.