I've done 4 sessions on S4 so far. First three sessions were in light wind to running-in Sonic 10 and 15m. Yesterday decided to check jumping abilities of the new S15 on 12m lines. SabFoil IKA on 111cm mast. 17,4m is my best jump ever. Previous personal record was 17,1m done on Sonic 9 three years a...