Ditto to DaveD's comments NS ... that's perhaps the biggest challenge flyanglers face ... and some of the sagest advice you can give. While I can't claim to be the world's finest caster, I can hold my own fishing with the very best of them out here because: 1) I know where the fish hold ... and 2) I bypass the water that I can't fish effectively with the bugrod. You combine those two and you'll do well ... I see many, many (dare I say most) bug tossers that don't fish that "combination" water. It's something a lot of people need to work on