Well, if you're dockmates aren't peta members...
Friends of ours have had such problems, including destroying cushions, etc. They called a local pest control agency and they came out and live trapped them, then took the beasties 20 miles away and released them. Problem solved!
In CT you have to be careful with that. Neighbor caught one of those midnight bandits in a Havaheart trap. Took the critter to a State park for release. Park ranger saw it and gave him a $150 ticket.
I guess it would have been cheaper to shoot the little guy.