I disagree. When I shoot for groups, I'm tearing and putting holes in my vanes and they still group/fly with the rest. I've even continued to use a ripped vaned arrow in a tournament because it was the one that day...and without incident as far as accuracy.....I watched a guy win a 3D shoot with an arrow with only 2 vanes remaining. It's about the tuning....not the fletch and I'll take a vane over a feather everyday.