I have owned an F2 Ride 277 103 liter board since 1999. I still have it and ride it a couple times a year when I am back in the USA. Amazingly, it still performs pretty well and is a pretty fun board to ride The fin I like best on this board, and have used for a long time for sails in the 5.8 - 6.7 range, is the True Ames 12.5" Convert. See: "http://www.isthmussailboards.com/prodinfo.asp?number=TACP" This fin works very well sailing this board in the ocean and waves, as well as B & J conditions. For flatter water a similar size freeride fin with less tip sweep might be good.