Mike Corley and I guided a group of four from the Palo Alto area today on the Lower Sac.  Nymphing was a little tough today.  We did well in spots where we waded or anchored up, but it was slow while we were on the move.  Our best nymphs were the brown & black jimmy legs and a size 18 flashback PT.  After lunch we got into some really good dry fly fishing.  Gabe and Brooke were able to head-hunt for rises and make productive blind casts.  It was a mixed hatch of PMDs and callibaetis, but the fish were mainly interested in the callibaetis.