You truly do get a different horse once you engage the hind end. I spent 8 years riding my Arabian and he always tripped we always had a strange jumping style and he even quit jumping on me. Then last year I found my trainer through a young horse I bought off him. At that point I gave up on my Arabian I just thought he was to old and couldn't do what I wanted. I worked with the young horse, but at times my confidence has always been an issue. I started riding my Arabian again and with work on getting him to engage his hind end he ended up fitter then I had ever seen him in the 8 years I owned him, he didn't look skinny anymore like he always had and he was happy to work. He even did a great 2'6 course at 25. A fall out in the field made him finally have to take a step back, but once you get them on their hind end you would never believe how much of a different horse you have.