We started with lunging, and aside from one explosion when I first put a roller on him we have been fine.
He lunges beautifully in sidereins at walk trot and canter.
I then moved on to long reining.
Every time I attempt to pass the second line over his back he explodes. He just will not accept it. I think it is genuine fear as every time , when the explosion has stopped, he stands there shaking.
I've tried getting him used to things going over his back, saddle cloths, rugs, brushes, me slinging an arm over him even had a measureing stick on him. He is fine with all that.
Any Idea's please.