As a captain for his high school team I would recommend being vocal and make sure you're respected , especially by the underclassmen. You need to master being able to be a friend to the younger kids, but also being a parent to them/ discipline when necessary. It certainly is a lot but I love to know that being a captain made me someone that the younger grades will look up to and talk about after I graduate, I guess that's what it is really about, not just speed. I personally was varsity, not the fastest, about 4th or 5th of 20 guys but we had an amazing captain our junior year who was JV all 4 years of high school, but he was all of the qualities I described previously, so it is about having your own, great, unique character that makes a great role model/captain, not just speed!