Spent 3 1/2 days recently on the AuSable. Fished the North Branch on this past Thursday afternoon with low success - 3 small brook trout. Then on Friday spent the afternoon on the South Branch again with low success - another 3 small brown and brook trout. Friday night, Saturday afternoon and Sunday morning down at the Trophy Waters stretch below Mio. At Comins Flats, it was a happening. Caught a total of 30 Rainbows, Browns and Brookies on this stretch. Saw lots of bug hatches - Hendricksons, Caddis and Sulphurs during my time in the Grayling / Mio area. Green and yellow soft hackle was the fly of choice while fishing on the Trophy Waters.