Thanks, Sg.
I'm mostly switching between trips so far, but so far have been cutting backing and re tying and that's wasteful and inefficient so I'm fishing for better ways. I want to re read and think about your post, cannot quite visualize it this late at night and on the road.
I also want to have a preloaded spool to switch out, but having a simple and effective line switch method, or even 2 , is good.

PS I hit the Rogue on Thurs with 11 others, 6 boats total, for 1/2 pounders and maybe some left over summer steel.

Take care,