GLOW! GLOW! GLOW!
Look around and get as much glow in the dark beads/blades as you can. I have converted almost everything over to glow and am having higher success.
Most think of glow as something you use at first light. Thats true, but even at high noon at 70 feet there ain't much light.
Of course this does not pertain to silver and brass/copper blades, but I would pair them with glow beads. A copper blade spinning around bright glowing beads gives a strobe like effect that is an attention getter.
Another option is uv tape on the blade, that gives them something really different to look at.
Think contrast when setting up your pattern. Don't always use the same color beads on the entire spinner. I have seen some very effective spinners made with black and white beads.
I am in no way a spinner expert, in fact, they are not my go to lure, but I have several that I will put on when other stuff is not working.