Sometimes such things happend. But if the project is good that it usually collects a lot of money and bounty hunters get enough money. But there are a lot of poor projects. So bounty hunters must be very carefully.
Choosing a project to participate in bounty, never know how ICO will go. Over the past six months there was a shortage of investors' funds. For me it does not matter how much money the project receives, but how successful it will be in the future. It is impossible to predict.
Thus, careful does not help. Perhaps intuition?