I am planning on taking my horses to a trail ride challenge next week, and I was wondering what kind of obstacles we will be judged on? This is my first time doing this, and I don't know what to expect. I did watch a u-tube video on it, and there were obstacles like backing up between rails, and walking through things hanging from the trees. What is the best way to prepare my horse for this, and is it ok to ride English? This is how I normally ride on trails at home.