I think where most wrecks are concerned any diver willing to go to the effort of getting a porthole or something deserves it. We worked a number of wrecks in the 80,s and 90,s one of which “S.S. Barrister” 3600 ton. I personally bought from the Liverpool and London war risks insurance ass. All these wrecks are rotting and collapsed and if a diver can get stuff of them then fair play to them and I’d give them a clap on the back for the effort