't Kuitje showed his bad side today, unconsitent chop+deep downwind+short course= THE classic ingredients to ruin my speedsession.  Started with the W49, but at that moment it was in combination with my favorite sonntag GPS_2 not controlable, good to know soo another design should be made for these conditions. $0$0 $0 $0Changed to the iSonic 86+ GPS_2 300, suddenly 100% control.  Changed the fin to the caspar speed 29cm and did my 69km/h run, this is good. On these choppy downwind courses a powerfull but still rather short fin does work very good. The iSonic 86 made my day, after I rerigged my 6.2 again it was such a  nice ride.$0 $0$0 $0 $0Peter did really good today, he proved that a speedboard can be very fast in these conditions. Next time I should keep using the W49 and see what happens, I hope this would help to be competitive on nasty chop too.$0 $0$0 $0 $0I get crazy about the alpha500, tried many times today but it seems like when I want to do it the conditions don't work (for me). Just want to improve my alpha, the current PR is definitly not superfast!!!!  Tried a lot of alpha's but it just wasn't fast today, wonder if someone else did a good alpha????$0 $0$0 $0 $0Still very satisfied about today, did some tuning on the Reflex and the "big" board was flying. Rigged the 6.2 twice with different tuning, learned to stick by the good tuning.$0