IN BC , especially on the Fraser River, there are alot 12' rods....not for the sport so much but because using them allows an angler to use a 12' leader which is what they do.
Yesterday we tried all the traditional methods for Silvers that I know are successful in most rivers where the Coho actually attack the lure and "bite" it or whether the leader swept into their mouths as it swept past. . I did notice by watching others and doing it myself , that the "bite" usually happened early in the drift. Right after the dropper weight hit the bottom and started to hop over the rocks. I suspect that is when the leader sweeps by the weight on the way to being totally downstream. With those 7-8' leaders the time is lengthened and the sweep is bigger allowing a better chance of a "hook up".
We had no luck with plugs either at anchor or boondogging even in the hole with so many fish in it you could walk across them. We didn't try what I heard worked on the Snohomish and that was corkie and yarn (most likely with a long leader). We did have our only luck on Dick Nites and I cannot testify whether they attacked them or not. When hooked they shot out of the water and put on a show. I suppose using those tiny trout hooks had something to do with losing all of the ones we hooked.
The only thing I know for sure is that the guys boating most of the fish were using really long leaders and were jerking alot and reeling fast. I would say they cast and let the weight hit the bottom and then jerked and if they had nothing they would immediately reel in fast and do the proceedure over again. Whatever you want to call it that was the winning formula yesterday.