In having several experiences with the Archaeological Community(some pleasant and some dripping with hostility). I can tell you that ones that have the ear of the politicians believe that there is no such thing as a non Historic wreck. Their opinionI do not have the exact wording that I recieved from NOAA in front of me, but it was very similar to: to protect and preserve a historic resource.
I guess their idea of preserving a wooden shipwreck is to merely let it soak in salt water 200-400 feet deep.
is that just because something is not Historic today, doesn't mean that something about it won't be discovered in the future that would make it historic.
On another note, there is already a buffer zone that was created by the CRMC
in Newport Harbor to protect the alleged wrecksite of HMB Endeavour.