Hosmer Lake Very few fish in the lower lake so work up the channel and to the upper lake for cooler water. Callibaetis spinners in the morning will provide entertainment and frustration as that is just darn hard to match perfectly. When I was there Tuesday we filled a few, but had to drop to 7x with an Organza Spinner. Ants, Damsels, Balanced Leeches, Callibaetis Soft Hackles, Red Zebra Midges, Scuds and Water Boatman are working on Hosmer.