Hitchhiking a boat is a bit like hitchhiking a plane. There are not so many boats...
Your best chances are to become part of the crew.
In the Caribean it's not too hard to find sail boats that need an extra hand on deck.
Weblinks with information
- Cruiser Log, has some very useful info, some specific for hitchhikers, including a rough guide of movements of cruising yachts
- 7knots has a practical way of finding boats
- Boating OZ, mostly in Australia, some Pacific
These sites are not super useful:
- Cruising Sailor - Crew Positions
- SailNet.com
- World Cruising Club
- Ships-for-sale.com
- http://www.windowsoncyprus.com/crew_list.htm
- http://www.sailingalternatives.org/crew.htm
- http://www.floatplan.com
- http://www.crewfile.com
- http://www.dockwalk.com
- http://www.reliance-yachts.com
- http://www.partnersandcrews.com