> but I don't think many random passerbys want to run a a cargo ship - they want to shoot things, and if they cant shoot, I'd wager 50% of >them will try to ram something.
I respectfully disagree: I have attended several events before I started building my ship, and would have loved to have gotten my hands on a remote, of anything, even if it didn't have guns. Also I've taken my gunless ship out on the pond a half dozen times now, and there's usually someone fishing there who mentions how cool it looks, and I immediately hand over the controls. sthey always tool around for 5-10 minutes, and that's just with the one ship out there. I know if I said, here's a target ship, try and keep away from me, they'd run that for a half hour or longer before picking up thier rod.
I've also had several fishermen offer to hook a line on there and go trolling 
James