Here’s the problem: word spreads, even signage is overlooked. “oh they don’t mind, it’s fine!” Until it’s way out of control. First it’s just adjoining neighbors, then their friends come, then their friends, etc. You might have to start having a conversation with some of these unwelcome guests.

I think, in Vermont, these things are handled best by word of mouth. Tell a trusted friend you are not happy and ask them to spread the word of what’s ok and what is not ok.

Show up in town meeting to announce it. Put a post on Front Porch Forum.

I’d suggest Permission Only signs along your entire perimeter.

http://vtfishandwildlife.com/learn-more/landowner-resources/private-land-and-public-access/what-posting-means