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.
The bugs they collected were very large. I'd say maybe two inches long was the body, and a big, dragonfly nymph is maybe an inch long is it not?
Jason,..Wish I were better on this darn computer, because I could have emailed the host of that show
The Green Darner (Anax junius) is a common and widespread species of dragonfly with mature nymphs as large as 50-55mm (or about 2").