For those finicky gills, have you tried a floss and tinsel type wet fly? I've had good luck on a size 10 or 12 Professer (check the "Old Flies n Stuff archive) that has black, yellow, or chartreuse body. Red hackle tail, floss and tinsel body of your choice, rolled mallard flank wing, and collar hackle. They're somewhat fragile, but easy enough to tie up.
Another one that's pretty good is an Orange and Teal from "Warmwater Fly Tyer" website.
Unweighted simple winged wet flies have been very effective for me the past few years. Put them a foot or two under an indicator, cast next to some weeds, and just let 'em sit for a little while.
Another favorite to try that's even easier is a size 10 scud hook, a short chartreuse floss tail, brown chenille body, and partridge hackle. It's a chunky look vs the floss-and-tinsel wets and is bad news for gills sometimes.
These are ideas that have worked for me in the past! Your mileage may differ...
The Green Hornet strikes again!!!