if you used traditional 3/4 oz nylon...
...you shouldn't fly the chute beyond 18 knots apparent. Note that apparent winds downwind will be less than true winds. In other words, if you're DDW in 25 knots true moving 7 knots SOG, your apparent wind speed will be 18 knots. However, once you begin reaching with the sail, apparent wind speeds equal true wind speeds somewhere around a beam reach. Which means you don't want to carry that chute forward of a beam reach in anything but light air.Some of the newer high-tech .7 oz nylons will carry the sail in a bit more breeze, but the question becomes, why? In anything more than 25 knots true, you shouldn't need a kite to achieve hull speed regardless of whether you're reaching or DDW.