Have you ever heard of monty roberts? Well i watched something just like your problem. And what he did is chase him away and every time he stoped he chased him away and then he let the horse stop and the horse approched him and he kept walking away then stroked him then walked away and stroked...
i have a 12.2 cob like pony and he will not keep up on hack when we have a canter he is 20 but fit so i dont see why he cant keep up so any suggestions are great full thankyou x