[3flies]

You may want to think about how a trout sees the surface. It wouldn't hurt to get under water and let someone float some flies your way!! As the fish looks up at the surface and depending how deep he is , only has a limited view of the surface. If the fish sees a bugs feet dimpling the surface along with it's tail and some sort of wings they will eat if hungry. I guess that color has a little to do with it but size and shape make the most difference.

More important than the fly is how you fish it. Learn to read the water and get to the point where you can cast forwards, backwards, and to either side.
Presentation is more important than the fly. You may be pleasantly suprised at what a fish will eat if it comes to them as a natural.