They don't have to be huge, just need a little weight. Lets say that you have a team and you average 160lbs for your players, you are going to do really good against a team that averages 130lbs. That is what I am talking about putting in the work in the offseason to get there if you already have it and it came natural to you then you don't have to spend as much time in the weight room. You don't have to have kids that are 195 plus but would help you to have kids that average the bigger teams. I say footwork because there is a difference between speed and quickness, that is why I love ladder drills and cone work trust me it helps.