Looks cool, and the wave board seems to simulate a kiteboard pretty well, the edging and such..
But, why dont you stick a helmet on their heads? one little rock or piece of gravel, and they go flying..
The edging and feeling is nice. Tried it myself, the feeling is compareable.
They don't wear helmets because they are Dutch girls.... Sort of a habit in the Netherlands... They are on the waveboards very frequenly and never come home damaged.. In the Netherlands virtually nobody wears bicycle helmets... (kids under 5 years sometimes do.. and racing/mountainbikers do). On the Dutch waters you can recognize our German neighbours by their helmets and impact vests... Maybe unwise, on the other hand it could make you more carefull and gives you more freedom to move..
@RTZ : I made the Nasachute myselve (15 years ago), beware they are very powerfull.. A 5 sqm pulls like a 9 meter SLE
@Hein: Thanks! The oldest one is on a sheetable 6m bow as well. She handles it very well. The skimboard is a great idea.. We could trie it with the nasa chute...