bolgo: Thanks for your answer, although it is a negative one !

I think our plans are in trouble now!
It is just hard to figure out surfing conditions via the Internet. WA seemed to be a good choice if you go further north,
quote from
http://www.windsurfingperth.com.au/wsurf-location.html:"Hearsons is 10 km north east of Dampier and is a good place to learn how to wave jump with one metre to two metre waves stretching out 200 metres with a 10 metre gap between each wave. Best wind condition months are April, May and June with strong easterly winds blowing from 7 am 'til 1 pm"