I don't get what you people are talking about with noise. Im 20, and I'm fairly sure my hearing is better than most of you guys, and I dont notice much of a diffrence between bare shafts and fletched ones. Much less 1" smaller feathers. All I ever hear is the bow and the thunk of hitting the target, and my bow is pretty quiet from what I've heard. Sure, ther is a diffrence, but barely noticable. I have small diameter carbons with 5" 4 fletch. Most people say its too much, but I get waay more than enough power at even 40 yards (wish I could shoot good enough at that distance though). They accually fly and penetrate the target further than my gold tips that are 2 inches shorter, and have 4" parabolics.
Also, my arrows stabalise almost immedieatly, not more than 10 feet from the bow. If your not a professional bowyer and can't make a perfect arrow that didnt need feathers, then why not put a little extra fletch on there. Id rather have too much all of the time than too little just once.