We found carp actively feeding with their backs sticking out of the water on shallow sand banks in a crystal clear river section. Initially I was puzzled by this behaviour; how tasty could a morsel possibly be that fish would expose themselves like that to larger predators (like humans and fish eagles)? Then it struck me, burrowing dragonfly nymph trails (i.e., sand dragons/club-tailed dragonfly nymphs/family Gomphidae) were everywhere to be seen in the sand, less than a foot deep. We also spotted many shucks of these nymphs on the sandy riverbank where adults had recently hatched. They were fairly small, like #14, so I tried to copy these nymphs with both search and more imitative patterns and fished these flies with good success on 4X fluorocarbon tippet, my trusty Sage XP 5 wt and the new Airflo Superflo WF5F fly line: