IN is called when the two kites fly horizontally, one directly above the other, approximately 20% apart, the bottom one at ^10, and both have not yet reached <60. Timing of the turns should be such that both kites fly at the same time vertically in the first square, and horizontally in the second. Size of the squares should be 20%. OUT is called when, on the last stretch, the top kite has travelled at least 10% horizontally.