When should an FAS be used?

An FAS, or Fall Arrest System, is specifically designed to prevent falls from elevated positions, particularly when using tree stands while hunting. The correct answer emphasizes the importance of safety during both the installation and use of a hunting stand. Using an FAS ensures that hunters are secured and protected from the risk of falling from heights, which is a significant hazard during hunting activities.

In the context of safe hunting practices, utilizing an FAS when setting up or using a stand is crucial, as it helps maintain safety when hunters are at a height where falls can lead to serious injuries. Since falls can occur at any time while in or around tree stands, it's advisable to use the system throughout that entire process.