This question is also bother me, because 12 weeks already lasts bounty and 8 more is like half a year. The best option is end this bounty,distribute tokens and start a new one with new bounty pool
You could have checked my answer then - bounty will end today (January 5th). All stakes will be added on holidays.
Sounds fair, the bounty was always based on a % of tokens sold. You can easily distribute the bounty now, based on the current sold tokens, and run another bounty campaign based on a % of the remaining tokens that will still be sold. It doesn't cost the project anything more and people can move on if they want to.
Good solution I think