While it was not a Caddis hatch I once had a situation that was so exemplary of a specific situation with an insect similar to a Caddis.
I was up on Williston Lake (Reservoir) some years ago and there was a hatch of Spruce Bud Moths. These nasty little things look very much like Caddis except for the tented wings. In one of the streams we moored at there were masses of these things drowned or near drowned, drifting down the stream into the lake.
So the problem was the fish were only taking the Moth's that were still alive and vibrating in the water. This is a motion I had not was of properly imitating no matter how hard I tried. If you have ever seen a moth in the water struggling you know the motion, but damned if I could mimic it. Talk about frustrating!
Each smallest act of kindness - even just words of hope when they are needed, the remembrance of a birthday, a compliment that engenders a smile - reverberates across great distances and spans of time, affecting lives unknown to the one whose generous spirit was the source of this good echo, because kindness is passed on and grows each time it's passed, until a simple courtesy becomes an act of selfless courage years later and far away.