Iv been nailing rainbow trout on a beadhead stonefly, i target them this time of year and find the evening and just before dark are best time to fish them.. im not all to sure why the stone fly is succsefull as it is this time of year, but its given GOOD results
I haven't fished 'bows for many years, but, FWIW, anglers around the Great Lakes used to favour something called a "Michigan Wiggler", in different colours. This fly sort of looks like a "Woolly Worm" that lost its tail. So you might try a Woolly Worm, with or without its tail. To which I would add the old maxim that 90% of what a trout eats is brown, fuzzy, and less than an inch long.