thanks for your thoughts everyone. The trailering issues may very well be a pain and anticipation of pain issue. Took some time, but after a trial of bute, we noticed a difference when riding. For instance, she is more relaxed and stretches her head down now for balance when going over poles. She is not sound at the trot especially when circling to the left. Seems to be a shoulder location and still working with vet, but haven’t figured out the mystery pain yet. I will look up the Easy willow and check on options besides bute. My trailer is a newer straight load, ramp and when I work with her, she will self load at liberty until we actually go for a ride–then we have to start all over again.