I have them on my hunting arrows and will probably put them on all arrows now. I want the extra weight personally but that is just me. As far as arrows flying any different..Gosh, I really haven't noticed.. Maybe way out it would change a little but 8 grains on 400 grain arrow is pretty minimal at 20 yards. I have noticed ZERO change in impact, I miss equally bad with them on or without [:-]

That, and make your arrows special looking so when people look at the pile of shattered arrows at the range (We have logs and stuff in front of 3-d targets to simulate hunting) people will know which one is yours...Or, if you are foolish enough to shoot at the bionic bird from 20 yards and smash your arrow...

I personally like to use orange wrap with orange feathers and an orange nock. It is the halloween arrow but man, it shows up well for my eyes. The whites are nice too and I might go that route when I get new arrows for the Black Eagle as I want to go real heavy on the arrows for that..Well, real heavy for me.