If you are using a trail camera to survey a piece of land, focus on high traffic areas.  I like to walk a piece of property with my GPS in hand and look for signs of activity.

1. Those 'highway' trails.  Trails that are just tore up from traffic.
2. Places where trails intersect.
3. Downed fences used a crossing points.
4. Crossing points on creeks and ditches.
5. Rub patterns.

Walk the active trails.  Determine where the deer are coming from, and where they are going?  You can typically find bedding areas and feeding areas on either end of a hot trail.  Determine which is which.  This can help you determine the deer's direction of movement depending upon the time of your hunt.  Placing a scouting camera on a hot trail can help you figure this out.

Areas where deer trails cross are ideal for game camera placement.  These intersections increase your opportunity to score with your game cam.

Crossing points at downed fences, ditches, and creeks are an ideal location for a trail camera.  These crossing points serve as funnels, and can draw numbers of deer right past your camera.

While scouting, watch for rub patterns.  Dominant bucks can mark territory with rub lines.  They can work these areas repeatedly to make these presence known.  These areas are a great place to get an image or clip of that big buck.

Honeysuckle

Watch for natural food sources.  Areas of oaks dropping acorns can bring deer to feast in that area.   Keep your nose peeled for honeysuckle.  This is like candy for a deer.  The same goes for persimmon.

Survey the land for these type of spot, and then place your game cameras accordingly for increased success.