Originally posted by Greg Skinner: One of the benefits of EFOC is that it takes less feather to stabilize the arrow. Most of my arrows are in the 25% or higher category and I use (3) 4in parabolic even with broadheads. I don't bareshaft much; I just put on the big Ace broadheads to tune. In fact when I am tuning I use 3 3" parabolics. I figure if the big broadheads fly well with that amount of fletching they should be fine with the 4 inch. The little 3" feathers acually fly very well under most conditions and especially so in a cross wind. The real downside to the small feathers is that they are harder to see in flight.