Talk:Lee Sin/@comment-81.187.222.146-20120702114440/@comment-5122602-20120703104136

If you feel like you need to secure the kill and also if you are certain your ultimate will kill them (you can never be 100 % certain but you get a good feeling for it with practice) then use it to finish them off.

However, sometimes you should use it for the utility it provides. To kick the enemy back into your team, to kick him away from a dieing teammate, to kick the enemy into other enemies so as many enemies as possible shall get knocked up (this is especially important in later stages of the game).