You may have been trained how to hold the ball with your feet and your head, you may have been trained how to kick the ball as hard and as fast as you can and you are even taught how to do the bicycle kick or how to pass the human wall when you go for a free kick but for sure, you can be more agile and quicker or faster if you can find an additional speed training for soccer. Sure, your coach have definitely taught you everything but is it really everything? I mean, if you can find some more training drills, it can help the team more, right? There are no additional training aids that will jeopardize anything.