At certain time of year grasshoppers become abundant a wind will blow these wonderful fish snacks onto the waters. A delicate presentation is not critical, because even big selective trout are looking for the tell-tale splat of this helpless terrestrial as it flops into their eating zone, this we imitate with terrestrial flies. Bristol Hoppers as terrestrial fly patterns are big flies and you can use short leaders that are easy to cast. Even if a hopper has been chewed on a few times, the fish don't seem to mind. Grasshoppers can swim by kicking their hind legs in unison, using the same method as they employ when jumping. This can be mimicked by fishing the fly on the surface and retrieving it with short sharp pulls. Continue for about three feet and then let your fly drift for 20 seconds before recommencing a retrieve as this imitates the grasshopper having a rest.