Piros said..
For 80-85kg +riders 100% , lighter guys will get away with 900 , remember it's only 1277cm2 the 100 is 1388cm2 that's why I like the 90 so much on the prone.
That is a very small difference , only 111 cm2 !
The S820 , my smallest foil, is 1528cm2, 140cm2 bigger than the S1000.
I suppose the S820 is more easygoing and turns better and is easier to pop up on a mini wave??
And the S1000 is faster and pumps better?