I don't see whats unethical about trail camera's. It lets you know whats happening in your area. For istance I have had mine out for a week and have 9 diffrent bucks from small fork's to nice 150 class ten points all using my area (atleast 3 are easy P&Y). I wouldn't have known those bucks were there. If it hadn't been for my camera. It is just a tool, it all comes down to "YOU" taking advantage of the knowledge you have gathered. I get just as excited when I pull the card and there has been events on my camera, as, I do when deer walk by my blind.
So how do you feel about food plots then? If cameras are bad then food plots must be the antichrist.