I just do what I do for any big ship...I pick one out, I wait for it to turn away from a group of ships (if there are more ships around) I float towards it aiming for the back of them, then when I'm getting close, I hit full sail, and depending on how I'm angled either i just slide up right behind them without getting hit, or I turn about to quickly turn and slip in right behind them. Then I trail behind them, moving my ship a little diagonal left and right, hitting them with my broadsides on the back half of their ship.
If that sounds confusing...
pretend the slashes are my ship /
and pretend l__l is the butt end of the enemy ship
so I go like
\ l__l
then I hit reverse to get back behind the ship
l__l
l
Then I just turn the other way while my right broadside guns are recharging
l__l /
don't slide up right next to the ship, just stick to the back end otherwise you will get hit
And usually that also helps them keep in a straight line, so a lot of the time I can manage to herd the ship away from the group of other ships. And once you're behind them, you're golden. You'll never get hit. (I can't say that for other weird ships that just decide to float over but usually I manage to miss them), You might get hit trying to manuever in there but once you get good at it, usually it's none to minimal damage.
BUT every once in awhile you do get that one crazy ship that just does something weird and keeps in a constant turn on you, I've had some crazy weird not normal battles with a few ships.
Hope that method helps as well
I've used it for all levels and types of ships, works well for me at least. I suggest frigs or sloops for their speed and easy manuevering, sometimes galleons are just too slow- especially on war sloops.