Hi Sharon & Winston,
Bruce is right. We live across the Hudson and store our CCD at a campground down at the shore. Our own private alluminum beach house!!!
Having a seasonal site gives you the freedom to set up &/or leave anytime you want. We go there almost every week end and truly enjoy it. We've also taken several long trips departing from the storage campground.
Long island has quite a few campgrounds that offer seasonal sites and winter storage. Any decent guide should provide you with all their contact numbers.
...or check the jersey shore. There are several parks north of Lakewood which would be more convenient for you guys.
Many areas in Bergen, NJ, Westchester, NY and Rockland NY have zoning laws that do not allow you to park trailers on your own land for more than a few hours/days at the time.