Kokes are MUCH MUCH brighter than 'bows. If you get one on, and see a silver flash...you will know it's a koke. I got the kokes and a couple of 'bows using a brass colored Little Cleo spoon/wobbler. I tie it directly onto my line (no swivel). I also got a bow on a worm OFF the bottom; and I also got one trout w/ Power Eggs OFF the bottom (one lemon / lime and one orange egg). I also tried a bobber and woolly bugger on an ultra slow retrieve, with no luck.
BTW, kokes are the 5th specie of fish that I have gotten w/ Little Cleo's. I never leave home without at least two of 'em.