I wanted to second this advice - the main thing here is that the rider knows which hind leg they wish to activate- the outside hind leg initiates the canter, so although exercises such as shoulder-in, leg yield, turn on the haunches etc. are great tools to serve to collect (collection in the walk referring to bending of three main joints of inside hind leg, renvers would be the most appropriate to prepare for canter. And like almost every other moment in dressage riding – shoulder-fore. Also, remember the rule of thumb that the outside hind leg pushes while the inside hind leg carries.
Used with caution, here is another tip: If your horse is comfortable with the whip and you do not feel using it will lead to tension or even worse, ruining the walk, you may want to try activating the outside hind leg with it – only lightly touching the outside hind leg with the whip.
However you may wish to call it, the rider must “coil” or prepare in hind legs so that their horse can be RELEASED into canter. The concept of releasing is something I teach rather than letting riders push horses into a gait. Horses should also be “released” into downwards transitions.
Also, think about your canter aids. I am not saying that other types of aids are wrong, but for long term dressage training, the canter should be taken by
1. first slightly backing the outside hindleg
2. weighting the inside seat bone, pushing the inside seatbone forward (forward and down) – this needs to be done carefully, as it can open another can of worms (collapsing the hip, riders sitting to far back etc.)
You may even say there are 4-10 steps involved in canter (shoulder –fore, preparing the hind legs for their appropriate function, balancing with a slight leg yield and half halt perhaps…. But do not ask for the canter with the outside leg alone or with the inside leg alone for that matter… preparation is the key.
Leonardo da Vinci once said “Those who devote themselves to practice without science are like sailors put to sea without rudder or compass and who can never be certain where they are going. Practice must always be founded on sound theory”.
Happy New Year everyone!
Dave Thind
www.worldclasswarmbloods.com