what does fury do?

[mlratto]

it's my understanding that fury works only on the hull of the ship so when firing against eitc, navy and skellies you'll need to aim at the hull. I don't recall it doing much damage to sails.

If i'm working cannon i'll always demast a ship with lightning then take it out with round shot to max my rep. so fury, as much damage as it can do, i rarely use.

In SvS however fury is king. yes it does cause some lag and your results will vary in regards to how much. However if SvS is your thing then you'll want to max fury.