Some of my hunting is in hilly West Virginia and almost all of the very best stands are related to some sort of saddle. The thing is that some of the most prominently mappped draws (those with the most contour lines depicting their existence) are not necessarily the best. The honey holes are the subtle 'creases' with just enough cover and terrain containment to bring the deer through. On the map, they are most likely a slight dimple in the countour lines. The larger draws do not seem to create enough pinch to pull the deer through a defined area.
Here in the flat lands of NC there is not enough relief to use this phenomenom easily. Although if there isany relief-related funnel feature, the deer seem drawn to it.