I was working with a green horse that often picked up the wrong lead after the fence. I just did a change after but I took a clinic with a trainer who said, if you're balanced to the fence and stay very very still through the fence the horse will land on the correct lead. have to admit, i was kind of skeptical. i'm pretty still over the fence anyways but i took her advice and we worked on that during the days i rode with her. by the end of the week? was landing on the correct lead almost every single time! it was a very miniscule change, but one that made a huge difference!