There are many ways that a kiter can get tangled on a marker buoy.
How has this type of accident been dealt with sucessfully? What are the factors that should be taken into consideration, by the person who attempts to perform this rescue?
A guiding pinciple in any attempted rescue is "first, do no harm"... since a bad situation can always be made worse.
What should a fellow kiter do when witnessing a kiter tangled to a buoy?