Really Don,
Have you forgotten how Mountain Equiptment Coop, the founding financial institution of Y2Y, raised the funds to market the advocacy for the Alberta Grizzly Bear hunt closure campaign?
Y2Y and blood related (financing and sponsorship) organizations learned to clean up their marketing tools of obvious anti-hunting bias, instead promoting the creation of "Sanctuaries" where Aboriginal hunting is allowed, but closed to all else, as happened with the Kluane National park efforts.
Y2Y strongly advocates the elimination of ALL predator hunting.
A person needs to be willfully blind if they research the history and still believe Y2Y is ambivalent towards hunting.
I have heard of the BHA, and first impression was that perhaps it is a group worth supporting. Hearing that BHA is actually aligned with Y2Y, well, that takes them OFF the list.
As an active advocate for maintaining hunting rights for ALL people, there is no way I could suggest anyone support this group.
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As to Y2Y policy, a person, and Don SHOULD know, has to read between the lines.
Y2Y Hunting Fishing Policy, between the lines in
Red
Y2Y's Hunting, Trapping and Fishing Policy Revised Fall 2012
The Yellowstone to Yukon Conservation Initiative (Y2Y) is committed to the ecological integrity of, and long term health of habitats and wildlife populations within, the Yellowstone to Yukon region. Within this context, Y2Y recognizes that hunting, trapping, and fishing:
are indigenous rights;
Y2Y will purport support for hunting, but only for Aboriginal harvest. Everyone else, you WILL NEVER get support from us.
are part of the cultural heritage and economy of the Yellowstone to Yukon region;
So we will finance non-hunting advocacy groups to replace this heritage and economy with non-consultive uses such as Bear photography.
are appropriate activities within the Yellowstone to Yukon region, provided that they are
conducted in an ethical manner that includes fair chase principles; and
may be appropriate means to help maintain or manage fish and wildlife population health.
In saying so, we mean that hunting will only be used when prey species become so over-populated in an area that they become a serious problem and non-human predators are not able to provide the control needed. Remember, we advocate No Predator Hunting, so that only "natural" predators can kill prey species. No predators? Well, we will finance a wolf introduction. 
In addition, Y2Y acknowledges the legitimacy of wildlife sanctuaries set aside from hunting, fishin,g or trapping where wildlife populations can recover from the impacts of the developed landscape, to protect wildlife genetics from the impacts of selection from human-caused mortality, and which act as source populations for hunting, trapping, and fishing opportunities outside their boundaries.
Remember the Bighorn and now Thinhorn research claiming hunting induced genetic selection, we helped with that. This is part of the strategy to eliminate hunting from areas within 200 km of National Park boundaries, We got Parks Canada on board, too bad the Alberta Gov. disagreed. Anyways, we will continue to lobby and finance the establishment of more National and Provincial Parks, where NO Hunting will be allowed (baby steps), while marketing to the masses that we Actually support hunting. 
*****ers!