Unfortunately, bounty participation always mean risks to lose your time and money (as you cold spend this time on other projects). Sometimes, the projects can't reach soft cap, and you risk not only on scams. The only way is to go on, and believe that best is yeat to come.
that's right, we as a bounty hunter can only entrust to the ICO project and hope to end up paid, because now it has been a successful project but when the end of bounty participants do not get paid.