Originally Posted by Crazy4CodyCole
Do you think it would be a good idea to use it to get my horse used to flexing more?
I'm honestly completely and 100% against artificial aids and gimmick such as martingales, tie-downs, etc. They build a false security and teach a horse to brace against the bit, rather than to give in to it. It can also create a hard mouth and ignorance on the part of both rider and horse. Pulling a horse's head down into the 'correct' position is just putting a bandaid on a broken bone. To get flexation, you must teach your horse to round his body and push from his hindquarters, When you have his body in-frame and working hard, his head will fall into the correct position naturally- no extra ropes or pulleys needed.
Really, a running martingale will do you more harm than good.
As a fellow member said recently in another thread talking about side-reins; If you're experienced enough to use them correctly without screwing up your horse more, then you're experienced enough not to need them in the first place.