The main thing is always, watch the wind directions and don't hunt directly over the scrape line.
If you are on a trail or in an area that has multiple scrapes, you will usually be pretty close to his bedroom, and the area will be definitly worth hunting during the rut!
Look for funnels in these areas, and travel directions, that will aid you in picking out a good setup, and as I said, since you are in, or near his bedroom, watch the winds and also be as scent free as possible.
Doe Estrus lures and also buck scents, such as tarsal glands work well in these areas!
A dominant buck will be furious, if he gets the smell of another buck in his area.
If you want, when you leave the area, get a stick and carefully, (do not step in the scrape or leave your own scent there) rake leaves into the scrape and pour a little doe or buck lure into the scrape. That may get him to check it more often, or at least it may help to tell you when he is comming by.