with my 100 kilos i use a 94 cm wide board - with a 10-oh sails
this planes in 10 + knots and can be handled in winds up to 15 knots
this has increased my TOW from 12 days per season to 54 !!!
this was a bad year and i had NO other option
a fellow windsurfer and colleague uses the SB US/Ultrasonic 147 which is very similiar to my older FreeFormula
however, it is MUCH faster :-)
try it, you'll like it :-)