Many intermediate and high performance flexwing hang gliders exhibit adverse yaw: When you initiate a turn the glider momentarily steers the wrong way! Recognising that many (but not all) pilots dislike this characteristic, manufacturers are fitting fins to cure (or at least reduce) this tendency.

Seedwings, a long-standing Santa Barbara-based manufacturer, have had fins on their gliders since about 1985.

Other manufacturers, such as Altair, have refined the airframe and airfoil section in order to reduce adverse yaw without the addition of a fin. Their Predator, a high-performance wing based on the carbon TRX airframe, and their highly regarded intermediate performance Saturn, are both reported to be largely free of adverse yaw even though they do not incorporate tail fins.

More recently, Wills Wing have incorporated a fin on their remarkable intermediate performance Eagle double-surface hang glider.