just wanted to get help on fly fishing? How do I know what fly to use and when to use it? I new to fly fishing but have fell in love with it, but sometimes its discouraging not knowing what to do. I fish on the south fork of the snake river and get to fish it 3 or 4 times a week. Would love to have some input and maybe some basic flies to use. I have lots of flies but am not sure what to use at any time. Thank you.