Jody Hartstone explains that the International Society for Equitation Science (ISES) has developed 10 training principles that should underpin all horse training, including trailer loading.

These principles are based on learning theory and focus on clarity, consistency, and the correct use of pressure and release. By applying them, we can improve how horses understand training and reduce confusion and stress.

Understanding these principles provides a framework for approaching trailer loading in a way that supports both learning and horse welfare.