You can very easily enforce marine protected areas for commercial fisheries. As I mentioned, on the west coast they're all tracked. I'm not sure what it is on the east coast. I think they're working on VMS systems on the east coast, but you can always detect when a commercial vessel is fishing.
If you want to create MPAs, and you want to consult and include people like the commercial fishing industry—which is a huge economic component—they're looking at this with a very skeptical eye, and they're not going to be onside when they see these kinds of things going on. Reports of people fishing in RCAs are rampant. It's not just people fishing in RCAs. When they hear that first nations are fishing in RCAs, then it becomes a political issue.
It's just this barrier that keeps building all this negative energy towards marine protected areas. That creates a real enforcement, political, and management nightmare to try to get it to work, so I don't know.