Quote:
Note: Dry flies are cast upstream and allowed to float downstream, while Wet Flies and/or Nymphes (larvae) are cast across or downstream with a small split-shot weight and drawn against the current for a swimming action.

Itīs often easier to let dry flies drift downstream from the start. This way the leader can be concealed more easily. In some sreams itīs not allowed to cast downstream a all. The rule of casting dry flies upstream results from that. Without proper equipment attempts to cast upstream will not be exceedingly rewarding. It could be effective to set up the rig in way that allows the dry fly to barely touch the water. The fly will drift a few inches downstream lift off and touch down on the original spot. I caught a lot of fish in small streams that way.
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