To prevent unauthorized entry and use of a challenge course, a layered approach is essential: clear communication, physical access controls, and thoughtful design choices. Posting No Trespassing signs communicates the rules and serves as a deterrent to casual entrants. Using removable staples helps minimize access to high elements by making it harder to reach or reuse anchors, reducing opportunities for tampering or bypassing safety features. Designing the course to restrict access creates built-in barriers and defined, controlled paths, further limiting where someone can go. Together, these three measures address awareness, capability, and opportunity, providing the most robust protection. Relying on any single measure leaves gaps—signs alone can be ignored, removable staples alone don’t stop determined intruders, and design alone can be circumvented if access points exist.