Question for Tugboat workers / deckhands!

I did a season there about 10 years ago, if you could figure out how to throw out 4 parts and a set of lights you had a job forever. The guys who did make it over there where some of the best professional deckhands and boat handlers you will ever find. May not be pretty but they got it done. As for the “6 on- 6off- 6 standby” you know what your faced with when your hired there, an OS deckhand with a decade of sand and stone work making 370 a day is doing damm good. My only question is why after that long hasnt he even gotten a 200 ton ? Basic AB ticket, anything ? Other than local work it will be rough for him to ever find that money with 0 paperwork.