RE: fletcthing for aluminium arrows
You can more than likely get by with whatever you wanna shoot. Fletch a couple and try them for a while. It's the perfect time of year for that.
I have a couple of Buddies that are shooting 22 series aluminum shafts. One is using Razrs, and the other fletches his with Blazers.They both seem to be working OK.
I myself seem to be going the other route. I'm switching to 4" feathers this year for a little more control.
Dan