I have recently been reading about the effect of wind direction on ships' sails and it has brought up two questions which one of us may be able to answer.

Masters tried to avoid having the wind directly astern, because the Mizzen sails shielded the sails forrard from drawing properly.
On our ship cards, there is a small secondary orange area just behind the stern. Is this intended to represent a slower speed because of this factor? I can find no reference to it in the rules. Is it just assumed that if you are in this orange area, you will follow the statement about orange zones.
As an aside it got me thinking about the weather gauge, and how a fleet who had this advantage took the wind from the enemy fleet when in close action. We do not take this into account in our game, therefore, a lot of the advantage of being to windward is lost. Just a reflection on my part!
Rob.