Watched someone plane a few times today in nearly nothing wind.It was averaging 11 knots,gusting 13 knots according to seabreeze graph but it looked much less.

He was on JP slalom 84 litres,55cm wide with 6.2m NP RS2 rigged very full with 36cm fin.

I was on 69cm wide Fanatic slalom, 7.1m and 44fin and he was planing before me and i weigh only 67kg.

Small boards can still work in light wind if you weigh only 60kg and have the technique.