The object is to get the watermelon to touch the enemy's goal line. The melon cannot be carried. Water Tug 'o War Hold in shallow water. Each patrol competes against all others, then winners against winners and losers against losers. Each patrol is given three minutes to dive for candies you've thrown in the water.
Wrapped caramels work well.
Boys who retrieve the largest number of sweets are the winners. This is a water version of British Bulldog. On signal, each patrol tries to swim from one side of the circle to the other without being touched by Jaws. When caught, a boy joins Jaws. Continue crossings until time is called.