Ok, so heres what you do.
First you must have "Distract", and be in booty bay
Then go to the spot where you get on the boat and stealth, and on the little tiny platform that leads to the boat, click on distract and aim it on the very edge of it. Then wait for a horde/alliance to try and run on the boat and instantly click, the horde will then turn and run into the water and miss the boat
-Might have to be on pvp server to work.