I have a similar problem. I did a 6 hour course at Sandringham 6 weeks ago. The same course I'd done 15 years before. (The gusty wind, slippery longboards, beat up shins and sunburn put me off for 15 years).
www.planetwindsurfholidays.com
www.club-mistral.com
www.planetwindsurfing.com
www.clubvass.com
www.velawindsurf.com
www.harry-nass.com
Understandably enough, most of these are targeted at the European or American customer.
I'd like to go for 2 months in the Northern summer. At first I thought I'd go to Maui. SUP in the morning, windsurf in the afternoon, and I'll be like this guy in no time.
(Hey, it's only 2 out of 4, so it's possible). But, you need a car, and I think there are cheaper and more beginner-friendly places.
Now I'm thinking either Greece (Vasiliki?) or Egypt (Dahab?). I'm leaning towards Dahab. The water is warmer and there are heaps of hotels and gear rental centres. OTOH, some say 27 degree water and 40 degree air can be too much of a good thing, and don't they have a permanent revolution or something?
Duck gybes and duck tacks after 2 months of everyday sailing at Dahab is possible surely? Right?