Great article!
I've been using a similar technique on the Green and Skykomish rivers for coho and chum. Deadly! For chums, I had a lot more luck using heavier jigs and a chunk of prawn on the hook. I was fair hooking fish 10 to 1 compared to the traditional drift fisher around me. I was always bank bound, so it took a little more work for me to find the perfect water for the version of the technique I use. I like to stand right at the top of the pool so I can cast down stream, let my jig sink to the bottom with the fast water entering the pool pulling the jig and keeping tension on it. Then I start working it to the current seam until I get just the right amount of tension on the line (the hard part to figure out at first). By finding this sweet spot, you can basically vertical jig (but the jig is down stream from you - you're not right on top of it like true vertical jigging...). I just let the jig tick the bottom, then lift the rod tip up a little, and let the jig settle back to where it was. The tension in the line directly down from you keeps the jig in place and you can hop it up and down until you get a strike. If you don't get any action, try lifting the rod tip higher or lower, faster or slower. If still nothing, you can pull out some line and do some 'back bouncing' until you get a few feet farther down stream. Keep this up until you find the fish. Usually they'll find you!! And an added bonus - since you aren't retreiving the jig through sticks and boulders, you get much fewer bottom snags (and fish snags). If you find that you have trouble holding the jig in the sweet spot and it keeps getting pushed too quickly into the slack water, then you may need to employ CowFish's jig\retreive technique to work it back to you.
Good luck!