For what it's worth, we were fishing Tahsis Inlet (on the East side of Nootka Island) in the Narrows area last June. The DFO collects the snouts of clipped fish to look for CWTs. Canada doesn't clip Chinook and does limited coho clipping, but they do provide tags and bags for self-reporting the take of clipped fish. We picked up a clipped Chinook - about 22" long as I recall. That fish came out of White Horse ponds on the Stillaguamish.