It depends on what school you wish to go for. D1 schools look for your HS or USTA records and providing that you have put strong tournament results you will be able to walk on to a team.
If you are unable to walk on to a team, you can still try out. This requires that you are a very solid 5.0+ player as coaches are looking for the all around guy. Your fundamentals must be solid, but need not be perfect; the coach will be able to train you on those. Everyone these days have power serves, but to be able to control your serve is key. Volleys, approaches, etc all must be very solid showing the capability of being a dangerous doubles player.
If you donít practice you donít deserve to win.