Yes, scouting can tip deer off and make them harder to hunt. Maps only go so far though, depending on whether agricultural or forested, flat or hilly. Sometimes you HAVE to get in the woods to find high percentage spots like heavily traveled trails going around big deadfalls you couldn't see from a map or that one white oak that has dropping all around it. Also, hunting buck sign from last year is better than nothing, but nobody wants to be hunting a ghost, either. So try to learn what/where they're eating and where they're likely resting....and avoid disturbing obvious Autumn bedding areas. There might not be much sign there anyhow, until the leaves start falling and they start feeling hunted. Realize that they'll likely be moving up hills or ridges in the mornings, and vice versa in the evenings, especially around agricultural areas or in ridge country or mountainous terrain. Like people, they typically take the safest or easiest route. Find enough sign to give you enough confidence to hunt, and then hunt it. Post season is when you try to find out ALL you can about a piece of ground. Other than that, try to use the weather to your advantage when scouting. Obviously, it makes fresh tracks stand out and possibly when they they were made, but rain and wind can really help in keeping you from tipping off the deer. Hope that helps.