younger ages: toss, drop, reserve?

[mbyron]

Here's the relevant rule.

Originally Posted by Rule 8-1-4

A player’s term of service begins when the player assumes the right back position as the server and ends when a loss of rally is awarded or a substitution for the player is made prior to the end of the team’s term of service. Each player may have only one re-serve during a team’s term of service.