(((((((((((((Lighter)))))))))))))))))) I'm very much at the same stage as you with being done with being 'nice' - largely because I feel there are just too many people who take advantage of 'nice' - and I end up being put upon, having unwelcome attention/conversations, having to deal with situations I didn't create because someone took 'nice' to mean pushover, no boundaries, her needs don't matter, I can have my needs met and so on. I'm not going out of my way to be rude to people, far from it, but I do feel very much that I want interactions with people that matter to me and that I get something out of as well. Polite to others, yep I can do that, but 'nice' I am pretty much over. I guess you're at a similar point to that. Yelly Guy sounds very childlike with his attention seeking. Very odd.
Is the trail a public footpath that you must reopen or was it you kindly making it accessible for others? I'm hoping there is a way forward that doesn't cause you stress, whatever it might be. I watched a programme here yesterday about a lady who has a public footpath that runs through the middle of her land and she was talking about the damage people do because they don't stick to the path and go wandering all round her fields, scaring her animals, leaving picnic rubbish around, one family were having a barbeque in what is essentially her garden! I don't understand some people's mindsets, truly. The nurse and the doc sound like good people to have around, though.