I have a house on Pelješac, near Viganj :)
So I am biased, being Croatian, however, would trade any EU spot for Cocos Island, not by a mile, but a light year :)
http://www.livecamcroatia.com/en/sportska-dogadanja-live-streaming/opuzen-neretva-kiteboarding-web-streaming/ Timelapse sometimes works. Flat water @Neretva river mouth, comparable with Swan River, WA.
To be fair, 2 weeks in August 2 years ago in Viganj, kited 2 days only. Two weeks on Cocos kited all days, morning and afternoon, 11m, 9m and 6. Epic. Just got back last week.
This is on a day when kited in Cro. Full of windsurfers from Slovenia, learners, like 100 of them, for a whole week (school holidays).
Notice how we launch in Viganj. There is no room for error.
Korcula Island in the background and Viganj below.
Viganj kiting beach:
And this is how we roll them at Croatia, town Korcula:) And no, we do not make a sandwiches with chopped meat....
Missed that on Cocos :)