Good Fly Presentation Obviously, the goal when casting a fly is to present the fly to the fish in a realistic manner. You are trying to simulate nature here. If you are going for trout in a stream, for instance, this means a drag-free float of 36 inches over a precise spot that marks the window of a feeding fish. Also remember that the Evening Secret (http://www.eveningsecretfishing.com/specialsecret/ 4_Fly_Fishing_Tips.php) will swarm fish to your spot consistantly, and help you catch more f.