You may want to contact a shop like All Out Kiteboarding in Tybee and see if they can give you some local gouge.http://www.alloutkiteboarding.com/index ... eboarding/
They have contact email listed
I have never been to Savannah but hear its nice.
I just went to "Expedia.com" and looked at flights. It appears it is a pretty competitive market because there are a whole bunch of flights all around 300 dollars. Did not see much variance in price.
The only good thing is that this is probably a good time of year for that area of the country, both the South East and Gulf. There are still a lot of powerful cold fronts sweeping down. The summer can be pretty light.