How many acres are you talking? Are your neighbors doing the same?

Remember, your seeing 1.5 year olds. If you have some older deer say, 3.5, 4.5 and up, they are certainly smarter and more elusive. I'm not saying that is the case but do the math.

Those 1.5 year olds you passed 3 years ago are 4.5 year olds, those 2.5 year olds are 5.5 year olds.