gps-speedsurfing
Dagresultaten
 
1Dani Coca Serra58,9
2Sico Barber44,29

first with sonntag gps 6 30 cm too big  for me on the gust. Then I changed to sonntag gps 4 28 and I went better. More control. I started with 4 kg  then I put 2 more Kg.

I also tried isonic 70 (50 wide). I get my best vmax (34,07) but less 250 anv avarage speed.

KA