It depends on if you want to do it right and go slow and only on breezy days so the rustling of the corn covers your noise. All the deer I have seen have been laying down and if I decide I'm not going to shoot it, I back off. I have't been busted yet. I know I could have spooked a couple without knowing it, but everyone gets busted once in a while, regardless of how your hunting. Also, as I said, the corn fields I hunt are small, 25 acres or less, so I'm not putting in that many miles. With that said, it's not my primary way of hunting, just something I do sometimes in late season when the deer aren't moving during shooting hours. They really get hunted hard around here so sometimes you have to go get them instead of waiting for them to come to you.