Here’s the situation. Horse is a retrain, years of incorrect riding, lama head with a dropped back led to incorrect muscle development, large underneck muscle and a tight back with hindlegs in the next county.
Enter trainer, correctly says this horse needs to let go of that tight back and this won’t happen until he learns to travel with his neck down and out. No manner of riding by trainer can induce horse to relax and drop down on a consistant basis.
Running martingale is introduced and set so that a straight line from bit to hand only occurs when horses head is down and out.
The horse responds well to this approach and can be ridden consistantly down and out. His topline changes for the better. The hollow spot above the shoulder blade fills in and the underneck muscle becomes less prominent.
So, what do you say? A good thing or a a gadget that has no place in dressage?