What common use does a half hitch serve in rigging?

A half hitch serves primarily as a method for finishing off other knots. Its role is significant because it adds security to the knot and helps to keep it from coming undone. This simple knot can be tied quickly and is often used in combination with other knots, providing an extra layer of safety and stability to the rigging setup.

In addition, while the half hitch can potentially secure a load temporarily, it is not the most reliable knot for that purpose on its own. It typically requires additional knots or ties to enhance its effectiveness. The half hitch is not designed to create a loop or to effectively join two ropes, as those functions are better served by specific knots designed for those purposes. Therefore, its primary utility lies in its ability to finish off other knots securely.