Kevin are you using gps?
Did you managed good speeds with gps? what board you used? what spot?
I am just intrested what kind of speeds you can get on the starboards isonic/ s-type/ etc.
Hypersonic 105 62kmh (34 knots)
Isonic 105 72kmh (39 knots)
Isonic 135 55kmh (30 knots)
Speeds where on the flat/small chop. In the Netherlands
. I am 80kg.