This is a website that offers pictures of every campsite and the size of the RVs that fit on each site. Although not pure boondocking the locations are perfect and there are hundreds of perfect lakefront campsites pictured. All these campgrounds are well maintained by New York State. There are plenty of drinking water taps scattered throughout the campgrounds, bathrooms with showers and dump stations. No electric at the majority of these locations.
Best website I have ever seen for "almost" Boondocking in Adirondack's 6 million acre mixed wilderness.....try it!!
CampADK.com - Living Life Adirondack Style - Camping Lakeside, Lake Placid Luxury