MCA:
I don't know how they do it out your way, but here in the UK it's considered specialist work. Very few companies undertake longlining. (Alot do load lifting)
The North Sea use longlining on the rigs for fitting new bits to the big burners.
To get on the job you have to pester the company like mad. Eventually you get to go as 'Co-pilot'. If you're lucky, depending on demand, you end up flying it.