RE: technology stupid
pab,yes I have often thought the same about noisy arrows on longer shots but I can't imagine that a deeer will hear an arrow at close distances and then be able to move.I would think that they would have to hear the bow at release to actually have a chance to move.
Straightarrow,I also went back to feathers with helical and when standing off to the side you will definately hear a high pitch noise but most vanes are noisier from the side but at a lower pitch.