Cock feather in, cock feather out, whatever flies best out of your bow. I use to shoot 4 feather helical with aluminum. Now i only use 3 feathers with carbons and i get better arrow flight. Saves a little money also. I've always have used 5" or 5.5" feathers helical fletch right wing.

Thanks for all your input guys. My beliefs about whether your cock feather is up or out were true it doesnt really matter.