Coaching varsity football is a collective effort. Your son's team will only be as good as the parents allow it to be. The athletes will only excel to their full potential if they have a full support team, and you are needed on that team!
The head coach has his hands full and several things he'd like to do will never get done properly if he doesn't have people who "take ownership" of tasks and get them done correctly, thoroughly, and on time.
Several of those tasks are clerical in nature.
1. A treasurer who collects athletic fees and pays bills.
2. A public relations director who stays current with media outlets and community groups.
3. A statistician who records game stats and compiles seasonal numbers for the athletes' future potential in college sports.
Tell your coach or athletic director that you're committed to meeting one of the team's clerical needs, and ask another family to partner with you, so that either of you can get the job done if the other is unavailable on a given week.