I used to do that like crazy when I rode Hunters and schooled several Hunters consistently.
The thing that helped me the most was my Dressage background.
I notice that when I revert to the "toe out" position is when I am gripping more with my lower leg, my calf muscle. Which then will cause your thigh to 'come off' the horse. It'll still be on the saddle, but not hugging it. If you catch my drift.
How I correct it is sitting really deep in the saddle, think more Dressage, and let your lower leg fully relax and heel drop into the stirrups.
Then, once your leg is fully relaxed, point your toes forward, and stretch your legs off the horse completely. Then when you bring them back on the barrel of your horse, concentrate on pointing your toes forward, and concentrate on thinking of wrapping your legs around the barrel of the horse, using your WHOLE leg, thigh all the way to your heel. You'll find your knee is going to be actually resting on the saddle, instead of slightly off of it when your toeing out.
That little exercise helps me get my leg back into place.
Also, make sure your leg is really underneath you, and your drawing that straight line from you head, to your shoulders, to your hips, to your heels.
When your leg isn't underneath you fully it is hard to get your legs in the right position as well.
Hope this helped! Sorry I wrote a novel. :)
Last edited by NoFear526; 10-06-2008 at 10:45 PM.