Can a bounty be awarded to multiple answers?
I have a question that has a number of correct answers, but from slightly different perspectives, so I'd like to give each some of the bounty.
One cannot award one bounty to multiple answers.
One could however place several bounties, one after another, and award each to a different answer. However, one needs to double the amount of the bounty each time, up to 500. It seems this thus will not really be an option in the short-run in your case.
Furthermore, in case an automatic awarding of the bounty happens it would also be split among tied answers. However, before that the global amount would be reduce by a factor of two. You should thus also rather not try to exploit this.