I've seen drawings of the Eastern Woodland fletch with tall feathers and a short chopped profile, both look to be about 4inches long maybe. Hard to tell from a drawing. I've built arrows leaving the feathers tall, 1 inch maybe a little taller. They have flown great but were very noisy and had a flu flu type effect past 40 yards. Cutting them down to a half inch made for a normal sounding, fast, flat flying arrow. I imagine the decision for tall or short feather height depends on how much stabilization the arrow needs.
Thoughts on rooster feathers... Although the rooster feathers make a great fletch they are not as durable as turkey feathers. Plus side is that they are free if you raise poultry. Also I have noticed that the feral roosters that actually fly produce a much stronger flight feather than a lazy barnyard bird. I wish I had some wood shafts, I'm in the mood to make a bunch of two fletch rooster arras !