I have a few questions that I would like to offer a bounty on that does not expire in 7 days. Questions that require either a high degree of research and/or a level of experience and knowledge that is not available in the current daily visitors.
I made a feature request at Meta which is collecting around one vote per 5 views. Request new function Standing Bounty (Currently at -13 with 68 views) I am guessing it will not be implemented anytime soon.
After thinking about a bit more I am considering making a somewhat standard "template" that I can customize for the particular question and post at the end of a question. It will highlights my willingness to grant a rep bounty using the "Reward Existing Answer" function to transfer rep after an answer has been posted.
The tools available for creating custom formatting are listed here we don't have a sandbox area to play in so I am going to post an answer here where I can workout both the wording and formatting. If anyone else would like to try feel free to post your own 'answer'.