This may be where I am different than some. I put cams in places that are easily accessible. Easy in, easy out, and leave minimal scent in the process. Also places where deer are going to be after dark more than likely. I also leave them in for 2 to 3 weeks at a time, to minimize traffic/scent.
That's exactly how I started out using them. Then the little voices in my head starting taking over and I found myself creeping closer and closer to honey holes. It was like a drug lol. So I just abandon them all together on my main land. I do put them up on a couple different pieces that I don't hunt that much. Just because it's cool getting pictures of critters.