Started to do 1hour with Gauke for the team, surprised it is 44km/h, it felt soo draggy and slow.  Later I did 1th and 2nd run on the iS94 with my own SL-S340 fin,  too bad the wind was not soo strong in the end, plus the SL-S430+iS111 didn't perform great for speed in the beginning on this flat water. I think the Sonntag SL-P will solve this problem. Can't wait to receive some smaller sizes :)