We were at a two day NH clinic and this lady had a 15 year old OTTB.
It was a long day and she lived close so was hauling back and forth.
The horse had given her trouble with the new to them stuff they were trying, was not very cooperative and the clinician had taken the lead and fought with him and only got him more unhappy and resistant.
At the end, she was trying to load him in a little rickety old two horse trailer as I walked by.
She had seen me help others and asked me to help with her horse.
She said some times he went in, others he just didn’t want to and then she could not make him without a battle.
I took the lead and walked horse around and to the trailer and horse was resigned and not scared or really resisting wildly, just totally unhappy with the bummer of a day and now being asked to get into that trailer he didn’t care for in the best circumstances, this time not at all.
I questioned her about if she really had to haul and in that trailer that the horse clearly just didn’t like.
She was adamant.
I didn’t want to pester that horse any more, so told her I would get the clinician to help her and did.
He worked with the horse, that again didn’t seem to like him and in a few minutes he had the now sweaty and disturbed horse loaded.
Lady didn’t come next day, so will never know what happened, but I felt sorry for both of them.
She was a very nice person and obviously loved her horse.
He was trying but hit his limit that day.
That happens some times, but that horse was right.
That was not a good trailer for him, too tight, I expect not balanced well and rough traveling.
He had to work extra hard to keep his feet under him while moving down the road.
A situation of when a horse tells you something, believe them.
That is easy to miss some times.
Without being there, is hard to say why the OP has trouble, but there have been enough guesses to maybe find a new way to make it happen?