After I have moved the horse around for 20 minutes, I offer a friendly slow rub directly on his head. This shows him I am going to be relaxed and patient. For safety, I rub with the arm closest to the horse. I also stand by his shoulder as far behind the swing of his head as I can reach and keep my arm between his head and my face. If he becomes vigorous in swinging his head around to avoid my hand, I will move him another 10 to 20 minutes. Then I try slowly again.