The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
PT --
I think your flies are attractive. However, I would like to gather feedback from you (your son) on how effective these particular designs work on the wild fish in the Catskills. I have my suspicions.
HLR
It seems to me that a bunch of the Emerger patterns seen here:
https://www.detteflies.com/catalog/14
...originated in places other than the Catskills...
PT/TB :-)