When my horse gets like this as an Anglo-Arab so pretty much all the time! When she wants to go and fights me my god she goes I make her go the speed she wanted and its constant untill I decide to let her stop ie when she is tiered they then learn whats easy and whats hard! Also in regards to turn out try no grain at first my youngsters are on nothing and tough or even a quarter scoop so there not left out with vegetable peelings mixed through to bulk them out!