I agree with outhers about the fact that there are many variables to contend with. In bow hunting, because the deer must be so close to be in range .... 40 +/- yards or less, in my opinion to make or not make a "stopping" noise depends mostly upon how alert the deer seem to me to be. I don't even consider stopping a deer when I am rifle hunting unless the cover is tight and I need the deer to stop in a specific clear area.

If the deer is showing signs of bein on "alert" or if another in the group is, I stay silent and hope for the best. If the deer seems relaxed, I usually wistle softly. Just enough to get the deer's attention. Has worked every time ... so far.

As far as quartered away, walking shots .... if the deer is moving slowly and in range and I have a clean path to the vitals, this is one of my favorite shot angles. I aim so that the arrow will exit (if it does at all) near the off side shoulder. This angle will put the broadhead through the heart/lungs area. If you are hunting from a tree stand, don't be surprised if the blood trail is weak. Even if the arrow exits, often times the low side hole will plug with tissue and weaken the blood trail. However if this shot is made well, the deer will not go far and should not be difficult to recover. .