Are there any big swamps around where you hunt? During late season, I usually go into a big swamp, or sit right on the edge between the swamp and a food source. Like mentioned above, sometimes you won't see any, but when you do see them, they tend to be in large groups. Deer are lazy, and if you find a good trail, there's a good chance that they will use it as opposed to break a new trail through the snow. These are great places to set up ambushes, and I've been successful doing this several times, but that was before switching to trad.