Freezing temps and low water temps are the time I pull out the big real silver plated spinners and spoons.
They can get a steelhead to move when little else I have tried gets their attention.

what type in particular? do you use any scents?

Of the store bought, get just about anywhere spinners, Blue Fox stands out. Over the years I have had very good luck with the silver blade/blue body just about anywhere I fish. One side note, there was a regional tendency in the northern CA area over the years I've noticed that put the silver/green body pretty close to the silver/blue, how far up the coast it runs I can't say. The chartreuse and orange bodies can work at times, but I see them working better on coho more than on steelhead.
Over the last 20+ years I've found B.C. Steel spoons from Pentac are hard to beat, I also make my own spinners using their components.
I personally don't use scents on spinners and spoons much, but many things we do are confidence builders which make us better fisherman. Using scent couldn't hurt, gels I think would stick better.