Just like an investor, bounty hunters would need to do the same.

Both will make money once the project succeed, but investors loss money if it fail while bounty hunters loss its time invested when it fail.
So they both have an important things to loss when the project failed, therefore everyone should ensure to support a legit project so it's a win-win situation for both the investors and bounty hunters.

I know it's easy to say it but it's hard to do, but its alright because it's not impossible to make it happen.