The Dec. 17, 1903 flight was witnessed, among others, by Adam Etheridge, John Daniels, and Will Dough.
Simplex, you reference "The Wright Stories" website regarding how, in 1928, Etheridge, Daniels, and Dough identified the spot from where the first flight was made. However, you focus on language like "the task was not easy" and the "landscape had significantly changed" to suggest that it was an endeavor entirely without merit.
The more important parts of the quote are emphasized here, by me:
“Beginning with the site of the building which housed the Wrights’ plane at the time, distinctly remembering the wind direction at the time, and that the track was laid directly in the wind, collaborating our memory on these facts by the records of the Weather Bureau, remembering that we helped bring the machine from the building and placed it on the track, referring to distances laid down in feet in Orville Wrights article, “How We made our first flight.”
“We proceeded to agree upon the spot, and we individually and collectively state without the least mental reservation, that the spot we located is as near correct as it is humanly possible to be with the data in hand to work from after a lapse of twenty five years. We marked the spot with a copper pipe driven into the ground.”
My dear Simplex, the building is still there. Think about it. It served as a monument in time - as an unyielding reference point. And, starting from the building, they jointly agreed upon their memories of the launch spot being at a location that is about 80 feet west of the building. Yes, feet.
Yet you seem to have concocted some "tinfoil hat" scenario where they were wandering mindlessly over an area of several square miles, while avoiding nearby sand dunes to do their part for the conspiracy.
The launch spot they identified is inherently accurate to within several feet.
Also, please note that while the launch spot is about 80 feet away from the building, the building is about 1,500 feet away from the BASE of kill devil hill.
Google Earth is your friend.