So I ride a lesson pony and he's usually pretty good. Except for the last few weeks. He is fine in the walk, and fine when we start the trot. He will stay in the he trot, stretch out his neck and relax for a bit.
That only lasts about half the lesson. He will then hollow out his back, raise his neck and if I don't signal for the canter, buck.
He will only buck once at a time, so I just push him forward and keep him at the trot till I'M ready to canter.
Once we canter, he relax's stretch's out his neck and becomes the perfect pony again. We started serpentine's this week at the canter and when we were changing direction he automatically did flying lead changes and was just perfect...till we went back to the trot where he will hollow out and he process would start again.
Could he just be sour of trot work since he is used a lot with beginners?(I will be mentioning this to my instructor since I just thought of it) Specially when he has lots of excess energy do to spring? If so, how could I work on making him NOT sour when we trot?
(There is no pain issue involved)