I'd kiteboard in Mui Ne near (Phan Thiet) Vietnam for 3 weeks.
Mui Ne is about 4 hours drive local speed (70 Kilometers ph) from Saigon main airport Tan son nhat.
The wind condition is very good in november and december time.
Wind speed range any where from 15-40 knots.
Check out this web site http://www.windsurf-vietnam.com
for wind info and pictures gallery.
I'll be there Nov 28 to Jan 4/2003 Kiteboarding.
Here's my e-mail email@example.com