The hatch of the big Ephemeras is one of the best possibilities in the season to catch a trophy trout. Our Vulgata/Danica flies is very well tied and offer the best solution for imitation these large insects. There are various solutions to imitating a mayfly with such a large body. Our experience is that polychenille is the most functional extended bodies on large mayflies. It provides a flexible body that does not prevent effective hooking, while the material has good floating properties. This variant has a double chenille body that is twisted to keep its shape well and is little stiffer than a single chenille. This means that it keeps its shape for a long time, the market's most high-end vulgata!
In lakes, spend some time studying the adult flies on the water. If they are consistently a bit restless, you can move the fly a few centimeters from time to time to imitate the natural flies. When the hatching is over, there will often be flies left on the water that are not very active. Sooner or later some trout will find them and often big ones patrol and look for leftovers. If you know where the fish tend to operate, it is a good idea to cast as little as possible and leave the fly still for a long time.