My magic recipe for trout and steelhead is berkeley trilene xl mono for mainline and seaguar pro for a leader. I use a #14 barrel swivel and attach a leader of approx four feet of flouro . The trilene is inexpensive very durable and casts like dream . The seaguar gives you the stealth advantage of invisibility as well as the mono floats while the flouro sinks which is another benefit if you drift or float fish much like i do .