I stayed at Windjammer landing on the leeward side and had to take a taxi over to Cas en Bas. It's a nice spot, not crowded. It's a semi-protected bay with flat water and some small waves - depending on tide and wind direction. I used my 11 and 14 there (185 lbs 132x40 board).
There is a kite school there (tornado kitesurfing) and there are several horseback riding schools in the area. One horse walked through my lines when I was setting up.
I did not go to the south (vieux fort), so I can't speak to that.
After a bit of advice on where to stay in St lucia. It seems like there are only 2 main kite spots either in the north Cas En Bas or Vieux fort in the south?
Are both spots similar in terms of wind consistency and strenght, as well as crowds. Is Cas En Bas more of a shallow flat water spot than Vieux fort?
Thanks for any help