[DickR]

The town website does say that a sticker (available to resident or taxpayer only) is required to park a car at the beach. It also says trailers must be left at that fire station below JoJo's, but it is silent on whether or not a sticker is required for doing that. I suspect it is not, since the sticker goes on the corner of the vehicle windshield, not on the trailer. I submitted a question to the town asking for clarification. I'll post their reply if I get one.

In the interests of time, I suggest a call to the town hall [(603) 476-2347, Monday - Friday: 7:30 am to 4:00 pm]. They can answer the question quickly for you.

The rules about leaving trailers near the boat launch on Long Island apply Memorial Day to Labor Day. I often see trailers there at other times, likely by day trippers, as I don't recall seeing one left overnight.