Ajooter, The two fletch works great. This is kind of a hybrid style that I came up with. It's similar to a classic Cherokee fletch, but the quill is split all the way down. It also resembles the Powhatan style fletch in Allely and Hamm's encyclopedia. I have shot the traditional three fletch for as long as I can remember, but now I don't really see the need for an extra feather.
Twisted Hickory, I wish I knew what the points weigh, but I don't have a scale, I don't have a spine tester either, I just build what feels right
. These pictures are where I got the inspiration for the fletching design.