I believe part of our miscommunication is my not being clearer.
1. Deer/elk is unaware of the hunter 25 yards away. This does not mean the animal is deaf, dumb, and blind -- they're always somewhat attentive to their surroundings; they're prey species.
2. Hunter shoots arrow with noisy bow.
3. Noise alerts deer.
4. Deer bunches to flee.
A. How much time elapses on average, if such an "average" is possible to obtain?
B. How much vertical movement downward occurs during "A." if such movement can be reliably measured?
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The elapsed time of "A." is, I think, the equivalent of a pheasant hanging motionless during its reorienting flight to horizontal. Not because the animal is motionless, but because the motion may be predictable?? If you know where the thorax will be when your arrow arrives at distance, that may be an improvement over relying on a quiet bow.
The quiet bow may or may not be quiet enough. A noisy bow you can count on to be noisy.
Since I do not know if there are too many variables to work with, I'm asking for assistance and guidance.
Most worrisome thing for me is that data will show the concept has merit, but my arrow is too slow. . . . Such is life.