I am a bounty hunter too, we cannot expect good results to every bounties we are joining. Infact joining this forum is free. So to avoid getting $5 for the 3months work. Examine the bounty, do not join an over crowded bounty. Checkout their bounty allocation, it must be 3% to 5% of their ICO.
Your suggestion is very good, where we can avoid the bounty project that is crowded with participants because the more crowded the participants, the allocation of funds we get will also be less and we also have to see bounties that have a chance of success later