Good one. I had a Bodoodle Pro with moleskin on the speedfins and it was absolutely silent but changed to the WB this year and haven't had an opportunity to find out if they can hear it or not. But I do get some noise when drawing back. I have the large alum biscuit and shooting 2413 Super Slams with plenty of clearance. I was definitely getting noise on the draw. I waxed the arrows and that seemed to help. I also shoot ICS Hunter Elite 340's through the same biscuit and actually get some noise from them also. I've trimmed the bristles a little and may need to trim them some more. I love the WB and while the noise is not too loud I've wondered how it will be with a deer close. Hopefully I'll find out before the season's up.