The seemingly tangentially-related "Swing your tail" of Lomax's 1935 trip to the Bahamas is notable as another boat launching song. Here are a couple verses just for reference:

Swing your tail like a snapper tail,
    Bulldog goin' bite me,
Them bulldog now barkin' at me,
    Bulldog goin' bite me.

Swing your tail like a grouper tail,
    Bulldog goin' bite me,
Cause this old ship goin' knock your head,
    Bulldog goin' bite me.

From the same set of recordings, the Bahamian men also sing a worksong "O the Last One", in which the leader sings "young gal, come swing your tail." However, this, too, has an appreciably distinct chorus, and suggests that the phrase "swing your tail" was something of a common trope in the songs of this culture.

Come young gal, come swing your tail
    O the last one
Come swing your tail in the waterside
    O the last one

Listen to snippets of both songs here.