And left visible damage, would you just drive away like nothing happened?
I just don't understand why the world is full of A-holes anymore!
Last year someone hit my swim platform and left a mark. Yesterday I pulled the boat and while cleaning the water line I found the boot stripe damaged and a chunk taken out of the gel coat.

There were also a few other superficial marks that look like they will rub out. But as I looked at the side of my boat I can tell it was hit quite a few times. There are too many marks to be just one incident.
I've NEVER hit another boat. But if I did, especially if I left visible damage, I would man up and leave a note apologizing and offering to pay the repair. I'm so pissed that I'm thinking about not keeping it in a slip next year. At the very least I'm going to have a talk with the marina management and see if they can move me next to someone more responsible and that gives a shit! There seemed to be a different boat in the slip next to me every month all summer. If it had been the same boat I'd have a talk with the guy.
I've seen people hang bumpers down the side of their boats and even met a guy who would tie a cheap Kmart inflatable on the side of his boat when he wasn't there to keep this kind of stuff from happening. I always kind of chuckled at them but now I'm thinking I may have to join them. What the hell else can I do?
Ok rant over. I just had to vent.