The rules

Ok, so here is the first draft of the rule set:

Size of the field: 5x10m
We will be playing two half times of 20 minutes.
Both teams consist of three players. Two of them will be playing and one is going to be exchanged. Very likley we will be exchanging a lot.
There will be no corner balls but free kicks. The penalty kick will be from 1,1 meters. There will be not goal keeper. In the event of a penalty kick there will be one player guarding the goal but that player can not use his hands.
One referee will be in the water and one outside. The referee outside the water will be observing the outs mostley.
Grabing a player is a foul and will be panalised with a yellow card. Two yellow cards are a red card and result in the sending-off of the player. The third player can then stepp in but there will be no more chance to exchange any players.
Logically there will be no offside as there will not be that long shots.
No fins or shoes are allowed. But you can wear weights.

Thats what I know this far. I will have to find out about the size of the goals next.