"Cripples" of duns emerging are often a different color than imago spinners. Just sayin... and spinner wing are usually clear so a very sparse wing of antron or similar is better than something less clear and bulky.
Presentation over pattern in my book; I don't carry "spinners" but have done a bit of butchery on flies while fishing to "make" one when required.
I will avoid the Clinch for at least another week as Shawn has either educated every one of the fish OR spanked them with his "twitching"! LOL.
Good luck to all.