I don't like your neighbours.Because of privacy laws I would have to be careful not to point it at their property and it would be difficult not too.
I have been using my wildlife camera recently which is placed lower than the fence height so not directly at their garden.
I thought about a sign saying 'area covered by CCTV' even though it's not to see if that makes think twice.
Or maybe just get some junk and put it up in that corner so they can't reach my plants.
Trouble is they'd probably pinch it like they did my smaller board.