I have a question that has not received enough attention and therefor I created a bounty for it. Now I have got a couple of answer which seems very promising, but I am still trying things out and also have a dialog regarding the current answers. At this time the bounty is ending and I would really like to be able to prolong the time here so I can award the correct answer. Is this possible?
Unfortunately not, bounties only last for 7 days and there’s no way to extend the period. There’s a one day grace period once it ends though, giving you another 24 hours to award the bounty.
You can also start a new bounty when the current one finishes, either to encourage more answers, or simply to reward an existing answer. But the nature of the system will require you to set a higher bounty than you originally did, and the original bounty won’t be refunded.