This is what i used for fishing.
This is fly-rig that I used. But I wanted to point out that i use left one, not right one on the picture.
Also, this one i called 4 foot leader. But I wanted to point out again, See this main line that has sinker clamp on it. HUGE MISTAKE! you are better off with leader that tied like this instead main line. So you won't lose swivel that often.
Good luck!! I am surprised that I can easily find it on internet.