i try to do the same thing as you but i have found that the deer change the patterens. even on the small acrege that i hunt. (5-10 acre tracts) so when things start going south i grab my bow 1 arrow and my release and go do some stalking/ scouting and see what is up. usually i do this on a real windy day. i do not like hunting on real windy days due to the fact that i never do any good. but that is how i got my first bow kill. anyway if you are not seeing them you got to find out why,and where are they moving to.