The problem with the fuzzy Velcro is the thickness. Since most guys already use arrows that are too stiff, chances are this will make things worse...and then it will wear in.
I like calf hair, but what I have gone to is a very thin moose hide that has a ultra suede finish on one side. Yes, I sell it, but only because it works so well. It has two sided adhesive on the slick side. Put it on the shelf and side plate as one or just use it on the side plate. It is very thin and incredibly quiet....so you say "but BigJIm, I want to be able to tune". Well yeah, I say, cut a rubber band. Get one that is about a 1/4" wide and very thin. Cut it in about 3/4" lengths and put 3 or 4 in your pocket.
Start shooting. Then put one of the rubber band pieces at the fulcrum of your site window and shoot some taking note of changes. Then stack a second piece on top of the first and so on until you find out what works the best.
Eazy peazy and you can't hardly wear it out.
BigJIm