A few years ago I did a bunch of testing with both high and low profile fletching, straight mount and helical, and even tried the off set straight fletching.
My observations were the larger fletching with helical corrected the arrow much quicker coming out of paradox than the smaller low profile fletching, but lost velocity down range quicker. They also made a bit more noise.
It was just the opposite using those tiny low profile 2” feathers in a straight 4 fletch. Those babies really wagged their tails coming out of the chute a lot more. I was playing with EFOC a bit , and those arrow set ups favored small fletching, but really needed to bare shaft perfectly to get decent flight…… Alas…. My experiments with EFOC arrows was short lived. Didn’t care for the trajectory issues shooting long distance. I even played with quick spin nocks a bit, but those are tough on strings.
I think out of all the arrows I’ve built and hunted with I like the 3 fletch 4” LP feathers with a serious helical the best. Good recovery out of paradox, nice spin to them, and a we bit better trajectory out there at 50-60 yards fr 3D.
But it’s all in what you get used to shooting as far as trajectory goes. I’ve seen some amazing archers shooting seriously heavy shafts with 5.5” banana fletching at much slower speeds , that could put those arrows where ever they wanted them….
Kirk