For Central New York (Parish, Central Square, Pulaski) in android or apple look up Oswego County Snowmobile GPS app, The county keeps a pretty good set of GPS trail maps and it has various sled friendly business waypoints. Tons of clubs to contact around here, $30 to join a club to show respect for what the clubs are maintaining here.
Order a laminated map from NYSSA for all of Upstate from Cicero up past the Tug Hill. Lots of great trails and miles to ride, only shows sponsors on the maps though
Red Pine GPS has pretty good maps for the area too.
Reach out to the Old Forge sled club, they can help you get the trail permit for that area. Nice riding up there in the Adirondack park.