We tested the new J-foils on the Kitefoiler for the first time today. While towing the boat out, the Protector needed to be going about 20 knots in order for the Kitefoiler to start foiling, which is a much higher number than either the old J-foils (15-16 knots), or the T-foils (12-13 knots). While sailing with the kite up, it was hard to keep the boat on the foils. This poor performance was partly due to very choppy conditions and a lot of swells knocking the boat off course. We used the new 25 sqm kite with the Dacron trailing edge.