We've received an email from PD Dr. Beat Knechtle at the University of Zürich, who is carrying out a survey on motivational aspects of extreme-endurance sports. They are looking for endurance athletes, who are specialized in extreme distances (extreme distances being defined as events which take 6 hours or more to complete).
If any Channel swimmers can spare the time, full details can be found in the following document: http://www.dover.uk.com/assets/documents/users/5/Information-Study-English.docx
The survey can be found at: http://psychmserver.uzh.ch/limesurvey/index.php?sid=43859&lang=en