Here is a summary of the Rules:

Courses

There shall be eight different Compass Sport Courses planned to the colour coded standards shown below. The two Blue courses must be different. The two Green courses must be different. The extent of these differences is a matter for the Planner.

Note: Course 6 should be of Light Green length, but of the same technical difficulty as the Green courses.

The allocation of age classes to courses results in:

·        two 'large' Compass Sport courses - Courses 1 and 3
·        six 'small' Compass Sport courses - Courses 2, 4, 5, 6, 7 and 8

There is no limit to the number of runners a club may field, unless the event entry is limited, in which case teams may be limited to a maximum of ten competitors per course, or to such lesser number as the competing clubs agree.
No runner may run competitively more than once per match.

Age classes are those applicable in the year of the competition.

Any competitor may run up an age class or classes, but not necessarily a course. Thus (for example) a W18, rather than competing on Course 7, may run up as a W20 and compete on Course 4, but may not run on Courses 6 or 5.

Women may run as men e.g. a W45 could run as an M45 on Course 3.

Scoring

The scoring for the Cup and Trophy uses the same system.
The winner on each Compass Sport Course scores 100 points.
Every competitor receives a score based on their finishing position.
Scoring on each 'large' Compass Sport Course will be 100, 99, 98, 97, 96, etc.
Scoring on each 'small' Compass Sport Course will be 100, 98, 96, 94, 92, etc.
If two runners tie for a place, both runners will score the points appropriate for that place.
The next runner scores 2 points less on a 'large' course or 4 points less on a 'small' course  (eg. if two runners on a 'large' course each score 98 points, the next scores 96 points;
If two runners on a 'small' course each score 96 points, the next scores 92 points)

 Compass Sport Trophy team score

13 scores to count
 maximum of 3 counters from any one 'large' Compass Sport Course
 maximum of 2 counters from any one 'small' Compass Sport Course

The winner shall be the team with the highest points total. Where clubs finish on equal points, positions will be
determined by looking at the best scores of the 26^th (Cup) or 14^th (Trophy) eligible counter (ie. from within the maximum number of counters per course) for each team. Then, if needed, the next best and so on.

Results should be determined on the day.

In the event of a course or courses being voided by the Controller, the result shall be decided on the courses not voided. In the event of 2 courses being voided then the number of scorers will be Cup - 20 and Trophy - 10.

Right, I hope that is crystal clear to everyone! What it means is that we need the greatest  turnout possible because although only two bodies can count their scores on any course, other bodies can reduce the points scored by other clubs by pushing their runners down the leader board.

Full details are at www.britishorienteering.org.uk/images/uploaded/downloads/events_competitionrule_j_2011.pdf