Hosmer Lake is good and the Brookies are now starting to fill in down the channel in their seasonal response to spreading out. 
Olive or Red Midge Pupa on the bottom, CB Cate, CDC Red Ribbed Black Double Down Nymph, Red PT, Water Boatman, Damsel Nymphs, Leeches, Crostons Chironomid and Ice Cream Cones are all the flies you will use to fool fish at different times and in different areas of the lakes. 
Not many hatches left but some straggler Callibaetis, Damsels and Caddis. Waterboatman take flight in the fall months and a floating water boatman pattern is a good thing to have in your box for the next 6 weeks here. Ants, Beetles, Hippie Stompers and the Red Aero Legs are good over the weed beds and along the reed line.