[Yoda]

My legs do the same but a drill on here from Yoda really helped. It entails placing/attaching a dowel across your thighs. Have to figure out how to attach it however.

bgolfing,

I recommend one of those elastic, thread-covered 'bungie' cords that have a hook at each end. Obviously, I don't know what they're called, but you can buy them at any hardware store. Just put the band behind your legs and hook each end to the dowel on the thighs. You may have to tie a knot or two in the cord to adjust its length.

And now for another application, Extensor Action! Loop the cord around your left shoulder, run it through one of the hooks and snug the loop around your shoulder. Now, with your left arm hanging loosely at your side, stretch out the cord -- now your pseudo-left arm! -- with your right arm. Take the motion to the to the Top and then down and through and into your Finish. Keep that cord stretched at all times.

Voila'!

This is what Extensor Action feels like!

Good luck!