If I was fletching with blazers only, then I would get a straight clamp and fletch them at an offset. I have triedblazers with the helical and the straight/offset and I think the offset works out better. You don't get much of a helical on 2" blazers but you can get a good offset. I have found the helical works best with 4"+ vanes or feathers. Helical works but I will be fletching any arrows that have blazers with an offset from now on.