The object is to improve the use and understanding of the rules.

Set out a box using 4 buoys, the size of the box is determined on the sailors skill level and types of boats being used.  The object is for each sailor to force the other boats out of the box.  Every time they manage this they gain 1 point.  They are not allowed to keep 'hunting' the same boat repeatedly.  For an extra challenge anchor the coach boat in the centre of the square thus creating an obstruction, it also gives you the ability to act as a judge and get the sailors to come alongside for a debrief.