Scent is considered bait in the freshwater regs, and bait is not allowed in any streams on Vancouver Island, with a couple of exceptions, please check the regs. If the saltwater regs govern the tidal portions of rivers, scent and bait might be permitted. Not sure where the tidal boundary is on that river. But for pinks in the river, not sure scent is necessary even if it were allowed, especially when they will chase a pink fly or spinner.