Write down once what each coach, player and manager owes. We track who's done, send the reminders and show your board where the whole league stands.
You volunteered to help with registration. Now you're the one person who knows which of 300 families still owes a birth certificate, while each team's manager chases coaches and parents to find out.
These are the other jobs a board hands a volunteer.
Enter each requirement once. BasesCovered works out who owes what and asks them directly.

A travel club in your league picks up your requirements and adds its own. Families see one checklist with both.