Any ideas in how to keep or discourage feral cats from boarding your boat? They're becoming a nuisance in our marina despite efforts to trap and otherwise control them. I'm wondering if there are any measures that can be taken to either keep them off the docks so they can't get to the boats or, if that's not practical off the boats. Note that our docks aren't gated and, even if they were, I'm not sure they'd be cat-proof.