Currently, bounties are used to obtain a proper answer. But only, at least, 2 days after being asked. It's a lot of time if you're a professional and you need that simple thing solved to keep going!
"There are reasons for that delay, you know?"
Of course I know, and I think the delay is set mostly because if everyone could set a bounty right from the beginning, people would start to look only on those questions.
But still, this is a feature that we have to consider. There are moments that we can't really wait and we know that no one will probably answer our question otherwise.
We are able to set special bounties after 1 hour, paying a fee of 50% to set it?
For example, you want to set a 100 reputation bounty before 2 days past. You will have to pay 150 rep, but the award will still worth 100.
This way, it will reduce the number of "emergency bounties", and consequently, the number of users that won't answer to normal questions to wait for the bounty.