Waiting for the tide to come in I  sailed the F79 with the 5.7 in open sea.  Everybody else was on wave boards with 4.0-4.5.  Also wanted to try the deboichet sl3 30 that I bought ages ago but never used.  I was hard to go fast as it was very rough but worth while to get tuned up in these conditions....who knows what slalom racing I may need to do!