Been There, Done That, only we were after sockeye. 4th of July has been our date for the start of the sockeye run, fantastic fishery. Check out Branch River Air, Van Hartley for recommendations on best time for Rainbows. I know people that have targetted rainbows and done great but not sure of the dates they prefer. We spent 12 days on the river and caught a few 'bows and grayling but the sockeye were non-stop action.