East Lake was good yesterday for my guide trip with Byron. We worked hard and kept adapting to condition and food source changes and I will tell you the Callibaetis hatch is VERY STRONG still and belike it will remain so for at least another 14 to 20 days, with stragglers into early October unless it turns very cold early. 
Yesterday afternoon about a half hour before I usually have clients reel up for the last time of the day I decided to return to the North Shore and see if we could get any more risers to a terrestrial. Early that day we got fish on Hoppers and Jiggy Twist Beetles, and a couple of dandy Browns on a Red Holographic Jig. When we returned close to 3:30 as the breeze came up there was a great little Fly Ant hatch and Byron ended up rising about 15 to 20 more fish on an RP Ant and landed 5 more. Worth the extra time on the lake and my guess is with the hot weather the next 3 days that flying ant will be around for a few more days. I used to use that RP Ant everyday as my clean-up hitter after the Callibaetis hatch was over. It is a pattern to add!