Originally Posted by Horsesdontlie
You cue for the canter by releasing the horse on the outside leg? This has gone against the whole, outside leg to cue for canter that I have always heard. Out of curiosity, how does this switch of pressure (Coming from the inside as opposed to outside) change the horse. I imagine there is a valid reason for it and would like to understand.
The problem is that what most coaches themselves have been taught is to aid from the outside but while it will work it presents a ton of problems with crookedness being the worst. The thought here is to push the horse's haunches slightly to inside so it canters easier...nothing is farther from the truth. The problem is that you can use any aid and with practice it will respond out of habit, not because the rider put it in the BEST position to do so.
To understand the aids we must understand the canter. A Half halt is a drive on one side with a rein aid on the opposite.
All driving aids will affect the OPPOSITE side of the horse. So if the horse is trotting you want to affect the hind leg that is currently in flight so that when it lands will initiate the canter. This is the outside hind with will only be influenced by the inside leg. The outside leg acts as a guard for those horse's that like to go crooked and shift their haunches to the outside as so many horse's can be one sided or the other.
The other reason is that the aid to do trot half pass is outside leg back with inside leg on and the outside leg WILL drive the horse sideways with the inside leg driving forward....sound familiar ( like a canter aid so often taught?)