Speaking of Camp Sherman Dad he had a great day on Little Lava this week and caught fish all day on callibaetis in different stages, but tons on a dry. 
Beetles are the other main dry you want here. 
A lot of great indicator fishing here on CB Cate, bruised leeches, ice cream cones, olive chironomid, spicy squirrel, hanging with my chromies, damsels and blood worms. 
If you head over to the big Lava Lake expect more of the same for flies! It is also a good bet.