I have a 13 year old performance mare who would not go on the trailer. I got her this winter and when I was trying her out and it was time to bring her home she would NOT go in the trailer. She would duck out to the safety of the left side of the trailer every time you would ask her to go up. Finally after about two hours in the freezing cold I called my friends mom down who is a wonder with naturally trailer loading horses. It took her about another hour before my horse abby was on the trailer for real. She trailered beautifully once we closed the ramp and was thrilled to get out of the trailer. For the next 4 month or so it would take us a minimum of one hour to get her on the trailer. I didn't matter if we were going to a show or leaving a show she just wouldn't get on the trailer in under an hour. Finally I got sick of it taking her so long to load and asked for advice from my trainer. I ended up being told to take a haybale a book and some treats and a long rope and sit in the front of the trailer and wait for her to decide that she wanted to walk up. I sat in the trailer for about 10 hours over one week and she would load in about ten minutes with one person at her head and one person to close the but bar and the ramp. Over the next three or so months it went that way until about a month ago. She was having a bad day and I was too and I was getting frustrated when she wouldn't get on the trailer. I was the only person around so I put on the 22 foot rope and grabbed my carrot stick. I looped the rope through the front door of the trailer and grabbed the end of it and stood at the base of the ramp. In about 10 minutes I had her self loading. Now she gladly walks up the ramp and makes herself at home and sometimes doesn't even want to leave the trailer. I now am moving on to teaching my right brain introvert thoroughbred to self load and I can see the same path just harder sitting in front of me.