How Lopers Prepare Horses for Trainer Watch this video to learn about lopers and how they play a key role in a cutting horse's career. By H&R Editors | November 8, 2021 | 1 minute read Click here to watch now! RL explains that lopers are the riders who warm up the horses for the trainers. Learn more about the loper’s job and what that they do to help the horses be successful with the trainer. Click here to watch now! What did you think of this article? Submit Rating Thank you for your feedback!