Woodely, I have tried straight, and RH fletcht, 3", 4" and 5". out to 25 yds. I shoot a long bow, 43# and light wt, wood arrows, 370, to 390gr. I saw "almost" no difference in the flight of the arrow. I made 3 sets of each RH 3,4 and 5 and 3 sets each straight. The RH 5" fletch showed a very slight decrease in velocity thru my chronograph, ,on avg., 2 or 3 feet decrease at 20 yds. I even took the fletching down to 1/4" high on the straight and RH 5", mixed the arrows, and saw little difference in the impact area. I did this over a 4 day period with a few hundred shots. I would say if your bare shafts do the same when setting up your bow/arrow combo., why wouldn't the results, bare and fletched, be close to the same.