Been over there a few times, a couple of weeks ago most recently. This time of year, I would not normally expect steady wind in the Abacos. I would expect the opposite in fact, near flat calm weather. This year with several wind bearing late season fronts, who knows?
You can see some kiting info and images from some of the islands off Abaco including a shot of Tahiti Beach at:
http://fksa.org/showthread.php?t=6089&page=8
I wouldn't recommend Tahiti for kiteboarding, maybe windsurfing, for most winds. There is no end of other venues over there however so be of good heart.
What you see in the Abacos is reproduced hundreds of times throughout the rest of the archipelago. If you have more specific questions, fire away. I have another site with lots of general info on getting over there and around I will PM to you.