I am looking at getting a switch rod for streamers and small steelhead with a little nymphing thrown in. I had read somewhere posted on here that switch/Spey rod wt. is different than single hand weight is that true? I ask because I want something I can enjoy catching medium size trout yet still beable to catch a steel head on. Also don't want it so light it can't throw bigger streamers 4-8. So any advice or thoughts on this?