This is the 2007 FT index, the 2008 FT index will be published on this page very soon.
 
FRED (Fast Rigging Easy Doing): The FRED measurement is situated midway between the top two battens and the measurement figure is centimetres from the leach. The FRED measurement indicates the ideal depth of loose leach achieved by adjusting the downhaul tension. Once the downhaul is set, all other trimming should be done using the outhaul.
 
Outhaul: The outhaul setting is the minimum and maximum advised correction to the stated boom length; therefore, if you had a stated boom length of say 200cm and an outhaul setting of  +/-1.5 - this would equate to a boom of: 198,5< 200 >201,5

Please note;
Due to the amount of imponderables including, weight of the sailor, sailing conditions, flat-water/choppy/waves, wind force, gusts  etc. it is not possible to call our FT Index settings Exact or Perfect, however they are the best advised starting point and often just right for the majority of windsurfers in the majority of conditions.