Which statement is incorrect regarding the properties of a tag line?

The statement regarding the primary use of a tag line being for securing loads is incorrect. A tag line serves to control and guide a load once it has been lifted, particularly in situations where the load might swing or rotate during the hoisting process. While a tag line can provide some degree of support in stabilizing a load, its main function is about load orientation and control.

Primarily, tag lines help operators or riggers manage the direction and angle of a load, making it crucial for safe and precise placement. They allow the operator to influence the load's movement without having to physically touch the lifting equipment or the load itself, which significantly enhances safety.

The other statements reflect true characteristics and uses of tag lines. They indeed enable light force application for easier control of the load, enhance personnel safety by allowing them to maintain a safe distance from the load while it is being maneuvered, and they are vital in maintaining the correct orientation of the load throughout the lifting process.