Oh, I didn't say it couldn't be done. What you suggest can be done. You can also lay concrete blocks on end, but that's not the right way.
Look closely at the EDGE of your feathers. Those tiny fibrous fibers lay in a direction that, while the bird is in flight, SHED teh air as it passes over the wing. It's a mirror image on the other wing. Same thing on your arrow shaft. You can glue on a right wing feather with a left helical, but then those fibers CATCH the air, as oposed to shedding the air over the top. Down range, this makes a HORRIBLE sound! You can litterally HEAR teh arrow coming. Makes a nasty racket.
I could jump out of the way of an arrow fletched wrong.
This ain't rocket science guys. There's a right way to do it. Just get the right clamp.