Not sure about the mig 12 but if it is anything like most other kites then it is exactly the same measurement as the space required for 4 people to rig up 4 windsurf sails in the same spot they have been rigging up for 20 years.

To check, once you have rigged it just leave it in the rigging area and count how many other people can't rig up whilst you stand around chatting to people.

thanx