im pretty sure ive got the window wrong but when i self launch in 20 kn winds i get dragged down the beach, a bit like bull riding,and when i get the kite up and im riding but i cant keep the power going ,the kite is either @12 with no power or down low with no power,the only time im moving is when the kite is powering through the range,but its pretty radical to keep it going cheers