Who, WAG? I think he's showing more insight than the original question. Naive.
However, if somehow the scientific community DID accept bigfoot as real ... there are still no clear answers. Assuming that whatever proof caused them to accept BF told them a little about what they are, those details factor into choosing the next steps.
It depends a very great deal on how closely they are related to us and whether or not they are self-aware. That determines whether a wildlife management paradigm is ethical or not. If they are "people", then we can't "go there" ethically. At the same time, if they are too "primitive" or their culture too different than ours, we can't expect them to follow our laws either. When a more advanced culture meets a less advanced culture, the less advanced culture is destroyed each and every time. We can't put them on a reservation, we can't find them and we can't corner them.
It's a messy can of worms. Anyone who can't see that is dealing with fantasy, not reality. Frankly, the legal complexity alone is reason enough for our gov't to suppress evidence as long as possible.
Best answer I can come up with is what ptangier (where is that rascal, anyway?) suggested, a "free roam" policy, plus a no-kill legal policy ... say minimum $100,000 fine and minimum 10 years in prison. That might buy time to study in more detail and develop a workable approach. While that's happening, perhaps the idea we're not alone after all will sink in and people will chill a bit.
Not much but it's all I've got.
MIB