"I'd guess they're about 95%, or more, visual."

That leaves a few situations when scent is really helpful, and I'd say that almost all of those times are when you are fishing over dour hatchery fish in terminal areas...like Reiter in late August when the water is low, clear, and warm, and the fish that you're fishing over have been in that hole for six weeks...

That's a bit of an extreme example, but similar conditions or situations are prime times for using the right scent for steelhead...

Fish on...

Todd