RE: GKF Whisper Disk
We just got a few in down at the local shop. I have not had a chance to tinker with one yet but just by looking at it I have a few questions. One, what is the disc material made from? Two, how do the slits compensate for a hard helical fletch in terms of both stabilization and arrow speed? Lastly, how durable is the disc material? Will it need to be replaced each season...or sooner if the archer shoots quite often?