Good nymphing requires a few adjustments to the leader. And failing to make these adjustments results in mediocre fishing, at best. The basics of leader design change when delivering flies underneath, especially if the goal is a natural dead drift. So what else...
![Nymphing: A two diameter solution to a one diameter problem](https://troutbitten.com/wp-content/uploads/2019/11/Troutbitten_Tippet_88-1080x632.jpg)