Day 4, Sunday:

Arrived on the beach at around 10.00 am, Pat Depoorter, early bird, was already rigged. The wind was not there yet, but around 11.30h the wind locks opened. After an hour of overpowerd sailing with the 5.4 it was time for a break. Around 1.30 pm I wanted to go back on the water, but the wind and the rolling chop became stronger, no one was actually sailing.
I waited another 30 min, and then, the wind dropped completely to barely 20 knots. I tried a few underpowered runs but called it a day around 3 pm
Fortunately for some late arrivers (Johan the indestructible ;-), the wind later came back again full-power. Weird day.