other than fly hatches like you said... FISH DEEP. seriously. i went over the weekend and we were using bottom bouncing rigs to get deep with liters coming off those and spinners, spoons, nymphs, streamers, yo-zuris, etc and it was working. we fished a 150 acre pond that has one deep hole of 75 feet and you really need to let a lot of line out to get deep but it's worth it. if you can use live bait use small minnows also. good luck