Well at that point in the freeroll,where everyone is trying to make the money, if you think you have the best hand, you should push PreFlop,sure you could get outdrawn but if you push,you have 2 ways of winning the hand, everyone folds or you win with the best hand,Im no tourny expert this is just my opinion, your table image would also come in play at this point, alot of it depends onthe situation and your reads.