cgs:
Ideally it would be sold as the team is initially formed. You could still do it at the beginning of a particular year of tryouts, but the easiest way is when the team is first formed.
It has to be the right type of team. It would need to be 14-U or older and a team that intends to be a college exposure team. Only a coach or an organization with a history or forming such teams would have the credibility to pull it off in Ohio. If we turned the clock back to late July/early August and I were giving it a go, I would advertise the team as a team that intends to attend not only Stingrays, Orland Park, Lasers, etc., but also New Jersey, Colorado Fireworks or Boulder and ASA Nationals and Premier if the team can qualify, and maybe four fall showcases in California, Houston and possibly Florida, with the thought the girls need to attend at least two of the fall showcases.
A lot of money, yes. Do Ohio girls want to sign with the SEC, Pac-10, Big 12, Big 10, etc? Then this is the track you pretty much need to be on (there is always the exception, I realize). Even if they don't go to a BCS school, at least they have played top-notch competition, had to battle for playing time and aren't going to be intimidated by any college opponent after facing the Batbusters, Corona Angels, etc. over the years.