I can´t tell you much about the Windsurfing since I am a Diver ;-). But I do know a really good Windsurfing school and that in Dahab is a lot of Wind what makes this place also famous for the
surfing. If you are interested to go Windsurfing here in Dahab please contact me. I can connect you with someone who can tell you more about the Windsurfing.