As boring as it is to read (I apologize), I needed to break it down so that the process is easier for me to apply. It now looks so simple. If you have a horse who is crooked, drops the inside shoulder and "rolls" his body, these steps might work for you.
- Tracking right, get him firmly on the outside rein by pushing his haunches behind his shoulders.
- Keep the outside leg on, pushing him forward and into the circle. Do not use any inside leg except to ask for forward.
- Make sure his neck is absolutely straight so that I can't see his outside eyeball.
- Ask him to let go of the inside rein by rocking it (straight back) rhythmically as firmly as necessary.
- Show him that he can let go through his neck and poll by riding a 10-meter circle. The geometry of the circle will help explain what I want from him.
- At the walk, be firm with the inside rein pulses so that he doesn't jam his nose into the air; this is an attempt to avoid (giving) softness.
- At the trot, be consistent with the inside rein pulses to show him that the aid is about helping him to soften and be more comfortable so that he trusts the right rein at the canter.
- At the canter departure, be solid with the inside rein pulses to show him that we are turning right so that he is encouraged to pick up the right lead. It is also imperative to sit absolutely still while asking for the canter so that his balance is not affected.