[QUOTE=lidador;7630577]I was also taught that it should be done with the inside hip b/c of flying changes/tempis (not that I am adept at either, but can do killer halt or walk/canter transitions with just the hip at least). Additionally, I’ve been told that lifting the inside hip gives the inside shoulder room to lift and the inside hind room to reach under in the transition – if you pitch your body forward, this prevents the horse from lifting his front end, so it’s something to be careful about when learning to do the transition this way.
The coach I learned the most from gave me this perspective on leg aids:
Generally (for a horse that’s already well responsive to driving aids), the inside (lower) leg is for driving (within a gait, around a bend, as part of a half-halt, etc) and the outside (lower) leg should only be for passively supporting the hind end (i.e. to keep it from swinging out).
As HollyGoLightly said, driving with the outside by itself will push the haunches in, often at the expense of your forward momentum and engagement of the inside hind.
In the context of a canter transition, if you need to ask for a little curving line as part of the preparation for the transition (e.g. to ensure the correct lead), then you should indeed use the combo of driving inside, bringing the leg back a little bit outside to support the bend. This combination of aids (precursor to half-halt, really) are something you may want to do in other instances though, so it could be confusing for the horse if sometimes you mean canter and sometimes not. So among the other reasons given, for clarity’s sake, the actual cue for the transition should be something other than inside leg/outside leg.
Once the horse learns the cue from the seat and is able to maintain reasonable straightness, the inside/outside curving line business can be reduced to genuine half-halts to engage the inside hind leg, and then the hip really becomes a nice clear (to the horse) invisible (to everyone else) aid.
In short: biomechanics of the transition, clarity, straightness, riding from back to front. (All of which must be important for changes and tempis.)[/QUOTE]
Yes Ma’am!!! :yes: