Whump Sez; Well I basically agree with the posts unless you are shooting wood shafting. Cock feather orientation can mean everything on wood. I do think 4 fletch is a bit louder than 3 fletch since the feathers are what makes noise on an arrow-- 4 feathers, [fletch height being equal] to me are louder than 3 and I have shot both. The same reason a lot of helical makes more noise than a straight fletch--it is catching more of the wind, and I shoot helical fletch. Now if 4 fletch is working for ya and you are not having any trouble, then don't stay up two days over a witches pot putting a Gypsy curse on me. I am just stating what I have observed from my own experience. Hunt Safe