see the Classifieds here at catsailor.com
http://www.catsailor.com/cs_classifieds.html
under heading 'windsurfing' (also selling windsurfing stuff and two 18 Squares)

Listing also at
http://www.yachtworld.com/boats/1989/Corsair-F-27-GS-2446171/Ocean-Springs/MS/United-States