I recently bought a 6 year old mare who is greater than green broke. She responds to me on the ground, works well on a lunge line as well as free lunge(most of the time). Head is level but choppy in her trot. She stands for saddle and mounting, takes bit easily. Stands great for bath and does not shy from plastic bags, whip over head or snap on ground next to her, dogs, other horses etc..... She is not neck reined but is flexing both sides. I have ridden her on a trail and over and through many obstacles. I am starting riding again trail and pleasure only after a LONG time away from horses. My problem is when she starts to canter she crowhops or a little more than that. I cannot tell when she is going to do this.. it may be the first few steps or thereafter. I immediately stop and flex her to one side and the other. Is this what I need to be doing? I cannot at my age afford to go over the horn or off entirely. I am not afraid of this situation and try not to overreact but I cannot be on guard everytime I am on ner.