I tought my horse to tie using a metal o-ring screwed into her stall, then threaded a lunge line through the o-ring, attached in to the halter, then applied pressure and release until she was accustomed to the pressure on her halter. I did the same thing with crossties. I attached one crosstie to her halter, then threaded one lunge line through the other side and attached it to the halter. So she was tied on one side but still could get release from the other,until she was accustomed to more and more constant pressure. The first time she was on crossties,i used twine to give some more head room as well as for safety, and she broke them one time only but just stood there surprised after they snapped. It worked for me and she's never misbehaved since that one incident. It sounds to me that you would feel more comfortable with someone who incorporates some natural horsemanship techniques, monty roberts, klaus hempfling...etc. I would ask each trainer what well known horse trainer they identify with the most and then research both of them. I love my trainer. You should be able to trust them completely.