This is a ridiculous change to implement... I am not against an avoidance bubble by any means. BUT. How the hell does anyone know if the black fins at 1001m are SRKW or Transients...? Or if you'd even see them at 1000m??
Maybe
@adamcu280 can provide some tricks to help with this? But truly. How would anyone even know? Unless it's a super pod rolling through and very obviously SRKWs by the sheer number of them. I just don't understand the variable regulation. Make it 500m for all Ocras, and then regardless of ecotype, they are avoided.
What happens in rough weather, focused forward of your vessel, SRKWs are 700m off your starboard bow, not within your focus...? Are you going to get a fine because you were driving your boat without knowledge of the whale's presence? 1000m is a long way off in rough conditions.
It just looks like another regulation for lip service.
Start pumping out Fraser Spring and Summer 5.2 hatchery fish (not Chilliwack hatchery fish), that's the only way we are going to remotely help these whales.
At 1000m, unaided eye, in perfect conditions... gonna say it's highly unlikely you, me, or even Jared Towers would get the ecotype ID right every time. The morphometric differences are subtle and there's enough individual variation to make it pretty challenging to the untrained eye. I've spent dozens of hours

looking for and working with killer whales under permit and it's not uncommon to lose sight of them for good even when we've been tracking them for hours and they were
"right there!" a minute ago.
Back in the earlier days of study (70s - 90s), SRKW generally traveled in their full pods. For instance, if you were cruising around the Salish Sea in the 90s you might run into J pod (~22 animals), K pod (~20 animals), or L pod (~40 animals, but they were the anomaly and usually weren't all together all the time). Sometimes the pods (especially L) split up into matrilines that travel apart from the rest of their pod, or together with members of another pod, but it was a pretty safe bet that if you saw a group of killer whales with 10+ individuals present they were fish eaters.
On the other hand, back in the earlier days the Bigg's were far less frequently encountered and more often in smaller groups of 3-5 animals.
Plus there's a seasonal component; in the summertime you used to be able to bank on at least some members of the SRKW population doing the "west side shuffle" on San Juan Island in Washington, while there was usually another part of the population doing some version of the ~160km circuit from somewhere around Victoria, up Haro Strait to the Strait of Georgia (via Active Pass or Boundary Pass), and then down Rosario to the E entrance of the Strait of JdF.
In the last 20 years or so the SRKW have been spending much less time in the inside waters in the summertime, preferring the west entrance of the Strait of JdF. They'll still make forays into the islands throughout the year and into Puget Sound (especially in the fall when they're chasing chum runs) but they generally aren't around for weeks or months at a time. SRKW population is in the mid 70s, which is about the same as it was in mid 1970s when studies began. Their population peaked in the mid 1990s at nearly 100. There are a few potential reasons why the population isn't doing well (which I won't get into here) but they don't always travel in their full pods and it's not uncommon to see a single matriline, so maybe a handful or two, at a time. Another potential situation is they're all "in", but they're spread out in singles or pairs over a huge area.
On the other hand (again), Bigg's population has been growing at about 4% a year and are frequently seen on the inside, outside, and everywhere. There are well over 400 of them in the west coast population which ranges from California to SE AK. It's not uncommon to see "T Parties" of 20+ Bigg's cruising around together.
So long story long, group size isn't a great indicator of ecotype.
For the record: I'm just as frustrated at policy wonks on both sides of the border making things way more challenging than they need to be. I'd agree that a blanket "stay this far away from
any/every KW" would be much easier for the general public to understand and abide by. But nobody cares what I think.