What makes any one with any knowledge of wood at all think there is any trace of the ark left after all this time? Let's say some bits and pieces are still there, a few pegs(no nails)and some wood bits, maybe petrified, how will they determine these scraps belonged to the Ark?
My scenario for the Ark? 150 years after the flood some poor farmer was searching for firewood and came upon the remains of a boat where one shouldn't be, not being familiar with the story of the flood, he cut it up and took it home and used it to cook meals and heat his hut. Lasted him for 3 or 4 winters.
Hey, my version of what happened to it is just as plausible as thinking anything is left of it after all this time!
Like the Turin thing....no "proof" can ever be found....only construed...which makes some things an ongoing mystery.........forever...