The 'nearest' boatyard can easily be several days' sail away.
In terms of making
money, I know a couple who made a reasonable living doing sail
repair and welding. Welding is a big one as not that many people can do it or have the
equipment on board.
The 'cruisers' that you find pootling about
Florida are likely to be far more in need of outside assistance than the 'cruisers' you find at Pitcairn.
I've never done an
engine 'rebuild', but wouldn't let that stop me from having a go if I needed to. The difficulty would be getting the
parts (gasket set, piston rings, valve
seals, bearing shells etc..) rather than lack of willingness to have a go.
IMHO the most important skill a cruiser can have for keeping going is being jack of all trades. To be able to get on in the back of beyond you really need to be the kind of person who can repair the
rigging at the masthead in the morning, diagnose and fix an engine starter problem at lunchtime, catch and gut a dorado and make a delicious
fish curry for dinner, and stitch the
genoa back together before
bed, all underway
.
I'm stuck in an office in Edinburgh right now and remembering all these things so fondly, man I miss that life in the South Pacific!