At current levels of production, I personally don't think that's possible. I think part of the impact that we have to address is not just the technology itself, but also the cumulative impacts of multiple farms in given areas and the location of those farms on wild salmon migration routes. All of those factors contribute to having an impact that puts it into the unsustainable column.
While acknowledging that the industry is certainly on more responsible footing than it was 20 years ago, I don't think you can ever really overcome some of the hurdles or inherent flaws in the technology itself.