T11,
You are getting good advice above. I will add, do some homework about the team. Look at how they recruited last year, especially in your position. Check out how many junior college transfer vs high school guys they bring in. That will tell you a lot as well.
Go often if you really like the first trip. I have said before, I believe the coaches like to know you really WANT to go there. Ask about winter/summer camps they have or attend. Then go if you stay interested in the school. Pursue them as much as you want them to pursue you, but don't over-do it; like making weekly contact. Once they start to know you and they come over to talk to you when you show up early and unannounced to watch a game and they stop over to talk, you can begin to get a feeling about how interested they are in YOU.
Be realistic about your abilities and potential to play at the school. Don't put all your eggs in one basket. Make a list of schools you believe you can play for and don't limit your list to one type, such as D1. be open to D2/3, JC's and NAIA. Understand the academic requirements and make good grades now!
Good luck