The Channel and Upper Lake at Hosmer Lake are worth the trip, with a lot of cool things happening here, especially damsel nymphs and adults, callibaetis, small scuds, leeches, chironomids and blood worms. 
Watch water temperatures on the lower lake (above 67 don’t fish there and go to the upper lake to find much cooler water) 
The Caenis mayfly hatch at dusk is still going. Travelling Caddis (Get a big Goddard Caddis and skitter it) and callibaetis are all things you will see from 5 pm to dark.