I saw an interesting show last week. The gentleman's arrow had staggered fletching. He claimed that you get all the benefits of shorter fletching, but none of the drawbacks.
I don't have a pic, so just imagine you are fletching an arrow, the first feather you apply 1" from the nock, the next feather you apply 2" from the nock, and the last feather you apply 3" from the nock. Gives you a staggered fletch job. The total surface area of feather is of course dependent on you fletching length but 3 3" feathers will yield a total surface area/effective length of 6" but without the drag of 3 6" feathers. If your shooting a high enough brace height probably could get 3 6" feathers on the shaft, but the whole point is to not have to.