All you have to do is post a result for the final score and then if you have tipped a draw, then you need to say which team will go through. Obviously if you have tipped a team to win and then it ends in a draw, then you cannot get points for the exact score, but you can get points for the right team winning. It basically allows for the fact that we have draws for the game and that there has to be a result.
An example would be good to get at what I am talking about, since it is clear that you miss understood what I was trying to get at. Lets say that a game finished 1-1 at the end of full time, then after extra time it become 2-1, then the correct score should be 2-1, not 1-1 for the purpose of the game, needing only one score. So lets say that the game finishes 1-1 after extra time, then the correct score is that, but since we have a winner for these games, we need to have a decision on the winner, so lets say that team 2 is predicted the winner, but team 1 wins, there if some had predicted a 1-1 will get the result, but not the correct team winning. since there ha to be a winner from now on, it means that any predicted draw should have them select the team they think is going to win from that. So that with a prediction of a draw at the end of the game, then you have to select a team to win. It means we are keeping the same system, with predicting the final result and the team that goes through.