You can not be sure at any moment until you have tokens in your personal wallet and a functional exchange listing that particular coin. Managers are doing their best to gain attention of bounty hunters by revealing incredible amount of money reserved just for them: however, most of them are worthless. Simply, it is not the most important factor for me. Actual team with sustainable project is my goal to find. Not an easy one, to be fair, but the possibility is there. Looking at it just as your extra-extra source of income is what would I recommend.