Positive Alternatives vs. Critical Commentary
Most riders focus on what they don't want their horse to do and attempt to "block," drive, or reprimand the horse in what they consider is the moment of unwanted behavior (more often they are responding to symptoms vs root causes.)
If they are reacting to only the big and obvious physical movements of the horse, they are missing all the initial Opportunities to check-in with the horse's mental availability and directability which influences his behaviors.