Look at Hugill's opening lines. Shanties were the work songs of SAILING-SHIP man. He was not talking about men that row boats or haul net. On page 2 he draws a distinction between "rowing songs" and "heaving and hauling chants." If scholars want to revise the definition then let them but it is an alteration.
If you were to alter the rhythm of Final Trawl-yea it would work at the halyards but not in the form and style that Archie Fisher sings it.