Why do quad-line kites allow more precise control and braking?

Quad-line kites allow for more precise control and instant braking because they utilize four flying lines attached to the kite's bridle, rather than the two lines found on standard dual-line stunt kites.1

By manipulating these four lines, a pilot can adjust the kite's orientation and surface tension with greater nuance, enabling complex aerial maneuvers such as stopping in midair, flying backward, and executing sharp turns. This increased level of control is a key feature of modern stunt kites, which are designed to perform high-speed acrobatics using lightweight, high-strength synthetic materials.1