When you have been fishing nymphs or dry flies and you want to try a streamer, can you just tie a streamer onto the same leader? It is often a risky proposition and you will do better if you modify your leader to support the bigger, heavier fly—and the more aggressive strikes you are likely to get!. In this video, Tom Rosenbauer tells you how to modify your leader when fishing streamers with a floating line.

Also look at:
https://flyfishing-blog.com/flyfishing-blog.com/2022/08/28/orvis-what-are-the-basic-tools-i-need-for-fly-fishing/
https://flyfishing-blog.com/flyfishing-blog.com/2022/08/18/the-orvis-guide-to-fly-fishing-pike-musky/
https://flyfishing-blog.com/flyfishing-blog.com/2022/06/27/orvis-best-beginner-and-all-around-trout-rod/