This is a technique used on the Columbia in the Hanford Reach area for upriver bright chinook... it works quite well, but the guys there do things a bit differently. They use Vibrax spinners by Blue Fox as these have a rattle in the body. Then they wad a huge cluster of eggs on the hook and wrap it with a lot of thread. Next step is to pinch a few extra split shot on the line ahead of the spinner.
The idea is to keep the spinner ticking along the bottom every so often. As long as the spinner is close to the bottom, you catch fish. The drift then is the same as Flatfish/Kwikfish.
Steelhead take the spinner as well.