Make it easy for him to use. Prepare a profile even if there aren't many Seniors on the team. College coaches follow Sophomores and Juniors, inviting them to their summer camp. Use your participation at tournaments as an early opportunity to get noticed. Many ODP coaches are college coaches who volunteer their time to help 100,000 players participate each year.
Tryouts are open to club members and are held by birth year in every state.
Your ODP state team then plays teams from other states at the Regional Camp. The Regional Coaches pick the Regional Team and Regional pool. Selection means that you are one of 25 best players, in your age, in a 14 state region. The Regional team then competes against the other 3 Regional teams. From these teams, the national team and pool are selected for that age group.