I personally, along with countless other riders I've seen share a similar equitation issue, when posting to the trot, instead of the leg and foot staying quiet against the horse's side, heel down, and steady, but not squeezing; the leg shoots outward away from the horse's side and back again creating a 'kicking' motion for lack of a better term to describe it. It's very unbalanced looking, and causes much aid confusion.
For many years I've pondered what causes this, and why some riders do this and some don't. I've always assumed it was maybe due to an imbalance in the rider, or lack of muscle. However I've never really found a clear answer to this very common in lower level English riding.
Care to put any thoughts to this? Or even what to practice to help, or work to improve the problem?
I do know that it is very irritating to the horse, and as a rider with this issue, know that I feel a level of imbalance, but I'm not sure exactly from where it stems from.
From one rider to another: any beneficial input is greatly appreciated. :) Thanks!