The IOF have just publishes new rules for MTBO that take effect from 1st jan 2012 for all IOF events.
http://orienteering.org/new-competition-rules-for-mtb-orienteering/
http://orienteering.org/wp-content/uploads/2010/12/IOF-MTB-Orienteering-Competition-Rules.pdf
The main one from the competitors point of view is that waterproof paper should now be used which I’m sure we will all appreciate. Perhaps all UK MTBO events should follow suit as the costs are negligible.
I also think the revised definition of MTBO is also quite good
'Mountain Bike Orienteering is a sport in which the competitors, using cycles, navigate independently through the terrain. Competitors must visit a number of control points marked on the ground in the shortest possible time aided only by map and compass. The course, defined by the location of the controls, is not revealed to competitors until they start. Mountain biking and navigational skills shall be tested in such a way that navigational skill is the decisive element. The course shall be completed by the cyclist riding, carrying or pushing his/ her mountain bike. Riding off the track or trail will normally be disallowed unless specifically agreed by the organiser and the IOF Event Adviser'
