You seem to want to know the answer to the question and I have already given you all I can. so I will just repeat:
I certainly would not be involved so I don’t know why you think I should be the one that comes up with any plan. I don’t have to be a subject matter expert to advocate for a cause. I don’t have to be an OB-GYN to advocate for abortion rights. I don’t have to be an environmental scientist to advocate for action on climate change. And I don’t have to be an expert on polar bears to be able to say “Maybe we shouldn’t kill polar bears.”
I have given an alternative. It is just not perfectly detailed enough for some random person on the internet that has no say in anything related to the subject.
You have not given a viable alternative. Your alternative is "negotiate with Greenland." That is not viable and I explained why. It risks their entire polar bear population. It would have the potential to kill far more than just one polar bear and much more slowly and painfully.
But I guess that's your preferred solution to shooting a single bear in Iceland, the first since 2016.