All scouts pair up to play Rock-Paper-Scissors (RPS).

Each pair only play one round and the loser goes behing the winner, puts his hands on his shoulders and follows him around to his next duel.
At each duel, the losing scout (and his snake tail) attach to the end of the winner's snake.
After a few rounds, there will be two long snakes dueling each other for the win.

This is a fun way to keep those that lost involved in the game and part of the winning team up to the end.