in a moment of desparation whilst arriving home and realising there was no spare car to use to get to the beach, I had no other choice by to experiment with the motorbike. And it worked. And since khe kiters at the beach showed interest, i thought i'd share some tips in case anyone is found in similar situation. So assuming you have a motorbike here are the tips (suitable for sports, naked bikes or tourers):
1 - must have a rack installed (a worthwhile investment)
2 - rack case/bag is very handy for the wetsuit / harness / towel but could use kitebag
3 - few meters of rope from bunnings

So, place the board parallel to the bike in horizontal position, so that it sticks out about half a meter behind the bike, hence resting the board handle on the motorbike rack (i.e. could rest the front of the board on the pillion's peg, but this is not critical). Then tie the board handle to the rack so that it holds it down and doesn't allow it to slide away from bike. Then loop the rest of the rope around the rack on the oposite side of the bike then around the seat and then through the footstrap on the other side and then back again to make the front of the board stick to the bike.
And finally, don't forget to wear the kite bag as a backpack (pretty easy as it's not very heavy)

Advantages of this approach:
- beating the traffic while anxiously riding to the beach after work at the peak hour
- getting the board fully dry by the time you get home

Disadvantages:
- probably can't take spare kites in case the wind changes...