and wake up in the morning to find my boat gone! Which could happen. They do check those docks frequently by boat and cruiser - and beach area especially on the weekend and they will pull the boat. The MPD are down at their town docks and beach frequently during the weekends - especially overnight. The campground being right there, and the small colony of rental cottages next to the town beach are checked on frequently and the residents on the other side of the causeway keep an eye on the waterfront over there.
Best best would be to either bargain with a neighbor for dock space or drive over to LI! - If it were my dock and my neighbor came to me to ask that favor I would think twice - because if there was even the slightest potential to have a wind kick up this weekend thereby causing a rocking at the dock - and perhaps damage

to the boat - the dock owner would be liable. AND in this society where even judges in DC seem to sue frivolously - I would be cautious about a strnager using my dock.
Could be I am overanalyzing - but you cannot be too safe.
Then again - if he had a HUGE LED sign they might think he was on official business and was meant to be tied up at the town dock and leave him alone!