Do they have parafoil stunt kite competions?

It is what brings Amir together with his father, Hassan, and Sohrab.

a quadrilateral in which diagonal are not congruent and larger diagonal is perpendicular bisector of smaller diagonal then it is known as kite -- M.S. Vighe

It's a big kite atached to a person, and kiter have board atached to his feet

Well if your talking about partner stunting like one mans then theres halfs, fulls, scorp, arobes, genie, rewind up to cuppie and others

The kites in the kite runner represent escapism. During the kite competition, Amir forgets about his father and the way he is treated and focuses only on the kite flying.