If I see one deer standing behind another then I don't have a shot. I have to wait for one to move. I don't want to wound an animal in order to take another. Its just not worth the risk. Surely if I wait, odds are good I'll have a CLEAR shot at one of them. Now the doe and buck I killed this year were with the same arrow, and I did recover both of them. The doe on 10/12 and the buck on 10/13.
edit: I did sharpen the BH and the kills were on seperate days also, not just the recoveries.