I guess look at it this way. On a public lake where people sink brush all the time these new finders work very well and others can see whats down there all too easy. Does that mean you can't fish their brush, heck no, it's public. We can't very well lease coves in lakes now can we. If they find it, it's because they have done lots of looking and long as they protect the fish there, i.e, don't take too many, weed out the small ones for seed, ect. I don't have any issue with it. Matter of fact as some have mentioned here most guys are cool about it all and they may even sink more along with what you've dropped in the area, helping you as well. Now, I'll tell a guy hey I sunk it so he know's I have every right to fish along side of him there but I'd never say hey you can't fish it. Do unto others as you'd have them do unto you.