Hosmer is cooling off and that is healthy for the fish. Early morning callibaetis spinner falls and some hatch later in the morning will bring selective trout to the surface. Callibaetis nymphs and Soft Hackles are taking a fair share of fish throughout the day.
Damsels in both nymph and adult stages are still relevant.
I always like small Zebra Midges and Ice Cream Cones up there and usually use a small Corq or NZ Wool indicator for the light takes you’ll be bound to get on a tiny fly. Add some 6x fluorocarbon to the tackle bag when you are headed to Hosmer.