What did you learn in altcoins, those projects didn't paid bounty hunters even after successful. We can gather information by all unpaid bounties and with reasons why didn't paid. For us this is very hard when our good research is successful but admin cheated to bounty hunters. List why didn't paid, your experience and history about unpaid projects
You can do nothing for that as long as the manager is not having the control to the funds and even with this way and that will never change the situation. Try your luck dude and almost all of the hunters were doing the same thing by trying their luck too. The best solution has already suggested so many times but it looks like there was no developer who interested to use escrow.