The only 20lb fish I've caught was a carp. It had stretch marks. The biggest steelhead (great lakes, so...whatever you want to call them) I've even seen around here was around 15. I can't even imagine seeing a 20lbr in person. If I ever do I'd prefer it was a PNW salt fish to a GL fish. There's a picture of Dec holding a 20 lb hen in the thread about guides over on Speypages that shows up in my dreams a lot.