The dry fly fishing on the Lower Sac is as good as it gets right now.  Today was my 3rd day with Dick and Chuck.  Our time-honored tradition is to fish the Lower Sac on the last day of their trip.  Our day started out SLOW.  The normal egg patterns and nymphs were not working very well.  After lunch we regrouped and took a different approach.  There are a lot of big caddis and small mayflies around right now, so we started blind-fishing some of the riffles with dries.  Chuck hooked up right away, rising a nice 16" rainbow.  We went back and forth between nymphs and dries for a while, but by 2pm it was pretty much dry fly only.  We had lots of targets to cast to, and when there weren't targets we could rise fish fairly regularly.  I bet we had at least 3 dozen grabs on dries today.  Dick landed the two biggest dry fly fish of the year, both about 21".  It was truly amazing.  As long as the weather stays nice this hatch should hold, so come up soon if you like dry fly fishing!