I’m the creator of Zoom Fisheye Spinners and I run a bead above the blade on my product hence the Fisheye moniker. And they work just fine. 6mm Fisheye and 8mm body beads. Just saying.........
I am not a fan of putting anything above the blade. I think it has a potential if pushing down on top and effective the spin. And it can hamper the water flow.
Thanks for the lesson. Pretty short actually for buildong a spinner. You could talk for hours. I loved your little smirk when you grabbed the sunrise blade. Haha. Sounds like a fav. Cheers.