that's what I did when participating in the bounty. I don't want to participate in all projects, I prefer to focus on a good project to get more income there. That is why I don't always exist in every project, because I think it's a waste of time if I can't get something.
It is true for investors and investments, not only for bounty hunters. The key thing is don't invest if you are not able to accept loss, especially the most terrible loss (loss nearly all of your capital). People tend to easier to say thanks when someone help them to get profits from investments, but they mostly forget to say thanks to others whom help to avoid losses.