[sand500]

there are so many problems dealing with water.
1. Electronics and water dont mix
2. We need to be able to clean up spilled water.
3. People might slip if water leaked, not just at competition but in workshops.
4. Any field that is water based could leak or if it broke, we would flood the stadium.
5. Moving all the regional to site with a pool would be a disaster.
6. Most people with a pool won't let you use a pool.

It would be cool to have a game with lots of tiny ping pong balls. this could simulate a fluid motion(I'm thinking about the ball pits) and using some sort of vacuum device would be easy clean up.