Clearly a few versions of this song, the one I am familiar with given to me by Dan Ferris from Kikeel Ireland is,

Do-a let me go me have a go at gals,
Do-a let me go
Hey-ro me yellow gals
a-do-a let me go at her

John boy was a rover and he's bound for Caddo (Wilson County)
Hey-ro, me yellow gals, a-do-a let me have a go at ya
John boy was a rover and to sea he's bound to go
Hey-ro, me yellow gals, a-do-a let me have a go at ya before I go

As I walked down the dusty trail all on a summer morn
Hey-ro, me yellow gals, a-do-a let me have a go at ya
I met an pretty Irish girl all red hair' all bosom
Hey-ro, me yellow gals, a-do-a let me have a go at ya

"Good mornin' sea captain , sir!" "Good mornin' you," says he
Hey-ro, me yellow gals, a-do-a want a go at her
"Oh have ya got a packin' ship all for Americ-kay?"
Hey-ro, me yellow gals, a-do-a let me have a go at her

"I've got the Sarah Jane, and she's bound around the horn,
Hey-ro, me yellow gals, a-do-a let me have a go at ya
With five-and-twenty paddies and a thousand sacks of wheat"
Hey-ro, me yellow gals, a-do-a let me have a go at her

"Bad luck to Gaelic sailing men , bad luck to them I say
Hey-ro, me yellow gals, a-do-a let me have a go at her

They all got drunk, broke in me trunk, and stole me clothes away!"
Hey-ro, me yellow gals, a-do-a so they all took turns at her and smiling sailed away.