Holland has lots of spots! And the winds look good...a bit cold, but nice winds...if you can, keep Denmark in mind...awesome spots!!! And excellent wave spots!
How many people did die on foils, c and bows?
That would be interesting to know!
Of course, we have to put into consideration the percentage of the types on the market...but still, I would like to know!
if the number are steady, this is a positive thing, since the sport grows. But still 6 or how many are way too much! And true, the worst season is about to come with storms during autumn! Don't go out of strong winds and/or gusts are forecasted!!! http://www.weatheronline.co.uk does forecast gusts! ...
if you can, bring it. Some days can be lighter, or if you want to hit the lagoon early for less people, then the 15 will be good to have.
Or if you want to do a day trip south towards Canoa Quebrada or so.
the board should be fine for you.
135 sounds good, this you can also ride with smaller kites and stronger winds.
Make sure not to buy new windsurf equipment, since you may never use it anymore...you wouldn't be the first