Race against eachother to pump the most water in to the others bucket! Once the bucket reaches its tipping point, your oppenent gets soaked! Use the hand-crank pump to fill the bucket over your opponents head.
The Pitchburst Game is a perfect substitute for a Dunk Tank, without the towing and all the water. Simply set the game up and place a filled water balloon in the basket, and you're all set to go!