Watch water temps at East Lake this week. If they hit 69 or above, quit for the day. Beetle action around the shorelines has been very good. Try ants and hoppers too.
The Callibaetis hatch is good. For the most part, fish want to eat during the hatch, but you might find the best dry callibaetis action in the evening right now.
Have you tried a deep dangle? Type 7 or 8 sinking line with 2 or 3 nymphs spread 2 or 3 feet apart. Chironomids and Callibaetis nymphs work best as this mimics their movement as naturals. On my deep dangle lines I put a spot of hot orange uv glue at 10’/20’/30′ and simply take into account the length of my leader to get to the depth I find fish in deep water. Summer days create a thermocline and fish will be right above it. A fish finder is a big help, but even w/o it, you can go in 25 to 45 feet of water and drop everything straight below the boat. Let it hang for an extended period but eventually give it a slow hand twist back towards the surface. Takes are strong. It is a fun way to find fish on hot summer days.
Also, deeper weed beds like we’d find on East and Paulina can be good with type 5 and 7 sinking lines with a Booby, Dragon Fly Nymph, Damsel Nymph, Scud and Diawl Back Nymph getting down in the cooler water way below the surface. I’d also add to that Rowley’s Balances Minnows in Chub colors on both lakes, although I also like to fish that fly under an indicator.