Need to spend my final 7 points on sailing...

[Plunderin Mom]

The only thing I would say to do for sure is what Shhlatkinz and Rose both said, and that is to put at least one point on ramming speed. It's not very useful for damaging ships and I never use it for that. But, I have used it countless times to make quick get aways. When you or your gunners are firing on a ship and it gets close and you see it turning and getting ready to fire, using ramming speed and then full speed will quickly get you out of range and ahead of it's fire. Then you can turn around and finish it off. One skill point on it is good, and a couple more is even quicker. And, like Shhlatkinz said, it's useful just in getting to your destination more quickly.

I would max out treasure sense, too, and the rest of it, I would say, depends on your sailing style and whether you generally sail alone or with a crew.