If you have a horse that will not load into a horse box here are my tips to overcome the issue.
1. Groundwork is key- try getting the horse to work through a tunnel of poles- backwards too 😳. Then try waking over wooden sheets so they get used to the noise.
2. I use a dually halter- this rewards horses for good behaviour and schools them for unwanted behaviour. Use the pressure and release system to when the horse moves onto the ramp then pressure is taken away and that is a reward for a horse.