I fished the Lower Sac the last two days with clients Chuck & Bill from the Walnut Creek area.  Overall, the fishing was okay.  The nymph grab was pretty tough at times, but good enough for decent action.  We had fun yesterday fishing dries and dry/dropper in the afternoon.  Those of you who enjoy the afternoon DFO (dry fly only) half-day trips will be interested to hear that the caddisflies are starting to hatch and there are some very big fish eating them on the surface.  Chuck hooked one that was well over 20" yesterday.  Bill did well on the hopper-dropper rig, hooking two nice fish on his dropper on consecutive casts.