Makkum looked bumpy so decided to go to De Houw. Arrived at 8.15h. First half an hour the wind direction was not OK, resulting in too much chop. After a short break I saw the wind direction shifted more to the west, so gave it another go. Speeds were OK. Changed to the Asy 21 and my speeds were even higher. Until I crashed and broke my harness line (luckily only my harness line). Decided to take a break and head back to Makkum.