And just to give another perspective to this use of a long whip….
Several years ago I rode in a clinic given by a good dressage rider.
One of the participants had a big mare who used to be a jumper and the rider was extremely disappointed…. Her horse was a headshaker and it was nearly impossible for her to get her moving in an arena… as far as I remember she avoided contact to other riders in her barn because everybody told her to get rid of this horrible horse. When the mare was asked to canter she bucked.
So the clinician watched her a little and then he got a long whip and told the rider that it was necessary to get the mare to move forward no matter what. So basically he drove her forward no matter what with this long whip… I am sure most people without knowing the story would have classified him as a horse abuser…. In the next lesson he grabbed the whip again ready to repeat the procedure… the mare was obviously smart and was a lot more forward going already… and during the clinic you could watch the improvement . As far as I remember the lady was able to canter in the last lesson of the clinic…and…. The mare stopped with the head shaking (I guess she was busy to focus on her rider)…. I regularly meet her in clinics and it’s amazing how much progress they made. The rider is now focusing on dressage movements and she loves her mare and nobody would guess that there were ever any problems… I believe this trainer made the horse and the rider happy by showing them the right way……
So there are always more things to consider then simply rejecting something….