Its all part of hunting, deer wont move the same every day nor will they always take the same runway. Right now they may move at any time and anyplace. Try to setup abotu 20 yards off a good beaten down runway. This may increase your odds a bit. Then in a few weeks, their patterns will change again as bucks will start crusing and marking their territories. Watch for the change in behavior from the bucks, and watch for the seperation of bachelor groups.