Exactly... 2 cm is less than an inch.
FWIW I'm 170 and I ride a 159, but I'll be buying a longer board next time. I'm a bomber though...
See poutine match his weight to his board length soon...
You should watch the superheroes of stoke trailer, there's some funny stuff in there about the bygone days of super long skis.
Superheroes of Stoke Trailer on Vimeo
while they don't do snowboards the matchstick guys make wicked ski films