Hawkins often speaks like a fortune teller and has been noted to mention reading "signs". He can work out to a percentage the chances of something happening. His predictions seem to be accurate quite often, as he was able to predict that he and his crew as well as the other Supernovas, would not perish at the hands of Admiral Kizaru. He also predicted that Luffy would survive his injuries sustained in the war. It is yet to be explained how he is able to do this. He can also use cards to assist him in determining the outcome of any event, as well as the likelihood of his own success. It is unknown what cards he uses (whether they're playing cards, tarot cards, or some other type) as only the back has been seen so far.
