Basketball
Split the fleet into 2 teams.
Have 3 bouys in a V shape, with 2 upwind and 1 down wind.
Each upwind bouy is a basket.
The object is to carry the ball up to your bouy and throw it onto the bouy like you were making a basket.
If the opposing team tags you with a sponge or squirt gun, you have to immediately drop the ball right there.
If you think you are going to be tagged, you can throw the ball to another team member.
If you get the ball away from the other team, you (and everyone else) have to sail back down below the leeward bouy, then can start sailing back upwind to your bouy.
Tack and Pass
Sort of like basketball, same type of bouy setup with 2 teams.
The object is to sail upwind to put ball in the goal - but you can't have ball in the boat when tacking, so have to try and pass the ball to another team mate who has made a tack.
There are bouys to define the outside perimeter, so you can't go on one long tack and be gone forever.
If you get the ball from the other team, you have to go back down across the leeward bouy before continuing on to your basket.
Hockey
The fleet is divided into 2 teams.
Each has a pair of bouys across wind from each other.
A ball is placed between them.
The object of the game is to hit the ball with a paddle as you sail near it, and get the ball into the opponet's goal.
Can only hit the ball with a paddle, and if you cause a collission you have to sail a penalty turn or something.
Broadsiding
2 boats sail on a reach towards each other, each has 6 tennis balls of a certain color (like one boat has all yellow, and the other boat has all white).
When the boats cross each other, they try to toss the tennis balls into the other's cockpit.
If the ball bounces out, or is deflected, it doesn't count.
If the ball lands in the cockpit and stays there, the throwing boat gets a point.
After each boat has thrown all of their balls, everyone stops and adds up the points.