I noticed that if you stand near the very edge of the platform that the zeppelin docks at, the zeppelin actually overlaps and goes under your feet. While it wont take you away, sadly, using one of the old anti-afk scripts for AV would be easily used. Just stand near the edge, turn on the jumping script, and go browse the net. When it arrives you'll jump onto it and be whisked away to your destination. Dunno if it works on boats/docks but I assume it would if there is any overlap.