More than once I have seen large boats (not just fishing boats) coming into the harbor with no one at the helm... in fact I distinctly remember one situation where some woman came into the pilot house while the boat was bearing down on other boats... I watched her frantically move about... only seconds later, some guy comes up and the boat suddenly slows and steers wide... disaster averted.

I tend to give these boats lots and lots of room.

I can understand (although not condone) running unattended well at sea... but at a harbor entrance??? That's just freaking insane!