I quite agree. I just thought from previous threads asking for similar help, a crime number was checkable.
Someone seeking a boat for the reasons you suspect probably won’t have a selection of photos of it, while the legitimate owner will. So perhaps the OP when checking back, could post a selection of photos please?
And a further point, a victim of boat theft will be able to say exactly to within a few feet where they had moored the boat when it disappeared. Someone trying to manipulate the board into helping them track down a victim won't know with any certainty where the boat was moored when it supposedly disappeared, or they'd have gone straight to it.