To me you have to keep an eye on what others in your class are doing and try to do better, after all it is a contest right? But as you do this be careful not to loss the joy of being in SFI, winning should not be an obsession. Though it is a competition, keep it healthy so you do not engage in an all-out 'war' towards the end. You never can tell, as you keep an eye on your classmates they also have their eyes on you.
See you at the top.