..... ok, I actually think I thought of something quasi-intelligent to say!
From a 1914 famous poem by poet Robert Frost who wrote that;
......... good fences make for good neighbors, (or something similar)
Chances are, you put up a good attractive fence to divide the 12-acres and the 9-acres on Farm Island, and suddenly both abutting parties would start to have improved relationship. ........ ye olde NH proverb so sayeth ......
Is probably better in long run, and less expensive in short run to pay for fence, than to pay for lawyers, plus you get a fence. With lawyers, you probably get a lot of nothing. .....