The attached is a photo of Kitty Hawk. The circular road at the bottom encircles Kill Devil Hill, from where the 14th December "flight" took place using the 8° 50" slope.
The 17th December flights launched from the bottom of the red line, and the longest flight of the day (800 plus feet) terminated at the upper most part of the red line.
The launch point is a long, long way from the hill.