Depends on where you are, your travel plans, and what passport your crew have. In countries like the Philippines
is is common for people to have boat boys (and drivers, maids, gardeners etc). Some initial thoughts :-
always someone to look after tender
or on anchor
watch when you go ashore
the boat should always be ready to go at a minute's notice (food, water
Finding good and honest workers can be hard.
Introducing a stranger to your home (boat) can be very stressful, and you may need to adjust your behaviour (wear clothes, keep money
in safe etc)
Getting visas for people with third world country passports can be impossible which may limit the countries you can visit.