bump! 
Unfortunatly the horses that I ride require alot of direction, Trooper espesialy will take advantage if he knows he can get away with something. But if I do get the opportunity I will defenatly try this.If you're horse is the calm dependable type, hold both your reins with your outside rein and canter with your inside arm held straight up over your head. This opens both your shoulder and hip angle which softens your lower back and lets you sink into the saddle and absorb the motion better. Looks silly, but works great.
Thanks, I will defenatly give those a try. I have a feeling if the problem persists my instructor will put me back on the lungeline.You and I must be opposites I can sit the canter but struggle with the trot ha ha ha I am currently doing lunge lessons and this has seemed to help ALOT!! Myboypuck suggested the same excercise for me and I am def going to give that a try...try dropping your stirrups you would be suprised how that will allow you to open your hip and drop your leg down...remember to keep your chest opened and breathe...I use the yoga on wii fit and that helps too! good luck keep us posted!!! oh and if you can get lunged some excercises i would suggest: at the walk bend your knees and pull your legs up and out like a frog hold it for awhile and then release you will def feel the burn but it really helps open your hips. also straighten your legs and make a scissor motion concentrate on keeping your upper body straight and tall...hope this helps!