Don't mind asking questions, afterall, it's how well all get started
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Blue foxes (thats the brand name) aren't too bad to start with. The blades on the blue foxes will have a number. If there is a 3, its a size 3 or #3.
Stay away from very shiny finishes on the blade when the water is this low and clear, like nickel. Dark brass, black, blackened brass, blue, dark red, and purple should be fine.
For presenting spinners, cast it upstream 50 degrees and let it sink. Reel in all the slack, and once you feel a tap, jerk the rod back and strip in the slack. This will get the blade spinning in the right "zone". Keep tension with the spinner, by reeling in any slack that forms. If you can feel a pulse in your rod, it's spinning. The slower the pulse, the better. After the spinner is around 45 degrees downstream, start reeling it in slowly, fast as it comes nearer. This is how you drift a spinner, and you can also cast upstream and retrieve it with the current.
It takes a while to perfect, so on your first trip, I recommend just trying to get the pattern down and try to read where steelhead would lie. Fish the seams and runs and riffles and good luck!
p.s. Im still working on this too.