Originally Posted by sweetandsalt
A floating line with an extended head and very long rear taper for nice smooth long casts with excellent loop stability. SA Mastery Salmon/Sreelhead Taper or similar Expert Distance Taper, Cortland "Boss", RIO Gold (does RIO still make their Steelhead & Atlantic Salmon line?) all are first rate lines for swimming a Green Machine.
You might reconsider the SA Expert Distance line. The running line is so thin it does not have the floatation of other, more fishable fly lines with a long head and or rear taper.