But how high should you fly a hull down wind and how long should you hold it?
It is not about flying a hull. Turning up until the hull flys is usually the biggest mistake I see people make going down wind, becuase their weight is in the wrong place. You will want to turn up untill the boat accelerates (in very light air the acceleration may be very slight, but you will definitely feel an increase in the sheet tension). If it flys a hull before that you are not out far enough or over powered if its windy, if it accelerates without any lift to the hull you are too far out.
