The Parachute Hendrickson dry fly is one of the most versatile Mayfly patterns available. The impression of this fly on the water will imitate both a Mayfly dun and a spent Mayfly spinner. The versatile profile of the Parachute Hendrickson will often produce fish when other patterns won't. Parachute flies land upright more than traditionally patterns. This makes them easy to see and less likely to spook a selective fish.