The wind was very strong SW with choppy water.
The CA Speed 40 was very stable in such a difficult conditions.
I managed many 69s and finally cracked 70km/h barrier.
The Garmin's displayed max speed was 73.6km/h.
Now ,My PB in max speed is 75.6km/h clocked at Sandy Point by Garmin.
My home spot is not the ideal speed venue like Sandy Point.
So I am very satisfied with this result.
My next goal is 40knot max. at my home spot.
It's too close but still too far.

PB in max, 2sec,10sec and 100m at my home spot.

Fortunately , My friend Shin took the video of my session including the best run.

73.44km/h(doppler) speed run.
http://www.youtube.com/watch?v=K5-Cb8EwGOY

69.912km/h(doppler)speed run.
http://www.youtube.com/watch?v=XqPAH5_p3aw

66.744km/h(doppler)speed crash.
http://www.youtube.com/watch?v=QG0DqkYkFlE