Richardson Lake Maine camping

Is it legal to camp on the shore of Richardson Lake other than at the designated sites? The regulations for Maine pubic reserved lands are at Public Lands Rules: Bureau of Parks and Lands: Maine DACF They don’t mention any restrictions on where you can camp on these lands.

Per State Parks and Public Lands: Maine ACF - Search Results
“For more information please contact the Western Region Public Lands Office at (207) 778-8231.” Ask if leave no trace bush camping is allowed and what the rules are for that.

GIS shows which areas are public land: ArcGIS Web Application

Why wouldn’t you just stay at the established sites?

I like solitude and I have a favorite spot on Richardson. I just don’t know if it’s legal to camp there.