Regardless of how many bounty participants, the vast majority of projects are outright failing, or falling short of even their softcap targets and having to extend their ICO's indefinitely at the moment,
so looks like they must find a more qualified and selective way to do marketing via bounties...
Bounty hunters didn't do much help nowadays since investors were smart enough to check the ICO potential, though hunters can still be a help to at least know that such project exist. It just need some never before seen tactic to outstand.