"Haul, haul, haul, boys, haul and be lively, Haul, oh haul, boys, haul. She will come, she must come; haul, boys, haul. (x2) Well, it seems to me like the time ain't long; Haul and be lively, haul, boys, haul."
The editors of Brown suggest that this is a fishing adaption of "Haul Away, Joe." Certainly possible -- but there is nothing compelling about the suggestion. - RBW