The time is now. Once you get to high school your time is running short quickly. Now is when you should be asking the questions of what you have to do to get velocity up so that come junior year it IS up! The great ones will already be offered to by then. Many committed. If you are not getting an offer as a freshman it tells you they do not consider you elite. If you are not even getting mild interest it tells you they don't consider you at all! Need to have some interest by end of sophomore year or you can definitely consider yourself behind the 8 ball. Remember you might get one year of a huge jump, maybe 7 or 8mph. Probably not two. The rest of the way through hs you may get 2-3. So if you are say 75 as a freshman... Then 82 as a soph, 85 as a junior you are definitely on the bubble and definitely waiting til senior season - most spots are long since gone by then. Now you are lowering your sights. So NOW is the time to get those MPH!!