That's a strong statement. I'd like nothing more than to leave 1-2 ac of corn or beans each year. My dad farms a thousand some acres and I've never been able to get him to leave so much as a row. His favorite and pretty much only hobby anymore is deer hunting. He just hunted 3 days this past weekend without seeing a deer. You'd think it'd be easy right? He just can't do it. Too much old farmer in him. Last year I actually convinced him to leave a couple rows along a finger across from his main gun blind. When he was done harvesting the field, and it also happened to be the end of harvest, he drove the machine over to those rows and worked them off. Couldn't help himself LOL.
Things that keep reinforcing in my mind. Our herd has gotten smaller. The dynamics have changed. When the herd was growing, being on the fields worked. Now it doesn't. We need to get back in the timber again. I need to get smarter with the trail cams. I've gotten "good" with them, but that hasn't helped me seal the deal on bruisers yet. Need to place them higher, like Roy said above, and not let the deer see them. If 95% of the deer don't mind them, that's not good enough. It's the 5% hitting the road that matter.