Not a lot you can do because while you may be doing everything you can on that land, many surrounding properties may not be doing the same. The very bucks you let pass may be on someone's dinner table not long down the road. LOL! You would need a very very very large chunk of land, in my opinion, to have any relative success trying to manage deer. There's too many variables you don't have control of outside the property lines.
I guess if it were me, I'd want to know the adjacent property owners and see if they are doing any type of management and what it is they are doing... and if they feel they are having any type of luck. Everyone would have to be on the same page doing similar management techniques because if not, one deer that gets passed up...
... well you know... is backstraps in someone else's freezer. LOL!
Good luck,
iSnipe