I'm trying to understand a little bit about emergers. It is my understanding that emergers are the stage, just before an insect hatches, when the nymph moves toward the surface and shucks is nymphal skeleton, in preparation to break the surface and fly as an adult. Now I've heard when trout are dimpling near the surface with no visable hatch, they are probably feeding on emergers, but would you fish them at any other time when you don't see trout dimpling? How about during a hatch? Can I assume that during a hatch that there would be both emergers and adults or is the time period between when the adult emerges from the water, to when it dries it's wings, too great that emerger patterns wouldn't be effective. Any insight would be greatly appreciated. Thank you.