Fretless - there are three or four verses, plus a chorus, to "Boatman's Dance" it's just that today's fiddlers don't sing them - Jim Krause pointed out the right direction in his post above. It's an interesting song with, as I've heard it, a chorus of sorts both before and after each verse - ie:

(first part of chorus)
High ho, the boatmen go
Polein' down the river on the Ohio
(or, Polein' down the river to 'Tucky hoe)

verse:
Boatman dance boatman sing
Boatman do most anything
When the boatman gets on shore
spends his money then works for more

(second part of chorus)
Dance boatman dance
Dance boatman dance
Dance all night till the broad daylight
Go home with the girls in the mornin/

Chorus
The boatman is a thrifty man
There's none can do as the boatman can
He'll steal your sheep, steal your shoat
Put 'em in a bag and take 'em to the boat
Chorus

I've never seen a pretty girl in my life
But what she was a boatman's wife
When the boatman blows his horn
Look out old man, your daughter's gone

etc. - There are several more verses, some more non-sensical or not PC in this day and age.