Grasshopper Fishing Flies: A Practical Guide for Trout Fishing in Kenya Grasshopper fishing flies can be highly useful when trout feed on insects that fall from streamside vegetation. In Kenya, the right hopper pattern, presentation and fly size can help anglers imitate this natural food source without relying on an overly complicated setup. https://froodl.com/grasshopper-fishing-flies-a-practical-guide-for-trout-fishing-in-kenya