So far I posed one question at the Physics StackExchange. Since I really want to know the answer I offered a bounty of about 70% of my reputation.
However, I am sure that a good answer to this question will require quite some work (probably more than a week) - so maybe StackExchange is not the right platform, but let me ask you nevertheless:
Is a time-scale of a week not way too short for some questions?
Would it be possible to provide some mechanism that extends the bounty-period? Perhaps by increasing the bounty after some given time-period?