http://youtu.be/15TsKMZoCe0 <--- Short clip with 1 of my swings then Adam Scotts
So I think I need to keep my left leg bent a little longer through the swing while still transferring my weight. You can see in the video that at the start of my downswing my leg straightens a bit causing a slight cast, zapping some power and creating some mishits. If you look at the Adam Scott swing you can see that his belt line doesn't really rise where as as it looks like the whole left side of my body rises a bit due to my straightening left leg.
Any thoughts or drills or tips would be cool. Thanks.