Dinks not all
Apparently dinks are not the only thing taken. Last August I worked on my boat on Saturday, went back on Sunday morning only to discover someone had broken in and stolen all my tools and spare parts. They even tried to steal my battery charger. They grabbed my tool box that I kept spare parts in and went through the entire boat taking tools, left the TV, filters, impeller and lubricants. I doubt they were sailors as they left brand new halyards. I'm not sure, but I think they came in by boat. Other than security cameras, I don't know of a way to prevent someone coming in that way. Several live a boards on dock.