I have since looked at several other games and for Christmas we bought all the Pirates movies and Pirates the game. None of the games I've seen take wind into account. That means no tacking, wearing or gaining the weather gauge. You might as well be playing a WWII naval battle.
The result is that I wrote my own rules. I combined several rules I have seen from pirate and other games. I call the game Traders, Raiders and Pirates (TRP). The rules are here in this post.
These rules have not been play tested, but you are welcome to try and let me know how they worked. I'm still trying to figure out what to do for a map board and ship models (may use the cardboard models that come from the Pirate game).
[EDIT: The original rules have been removed from this post and replaced by new rules on the following post]