Would I could cast a sail on the water
Where many a king has gone
And many a king’s daughter,
And alight at the comely trees and the lawn,
The playing upon pipes and the dancing,
And learn that the best thing is
To change my loves while dancing
And pay but a kiss for a kiss.
I would find by the edge of that water
The collar-bone of a hare
Worn thin by the lapping of water,
And pierce it through with a gimlet and stare
At the old bitter world where they marry in churches,
And laugh over the untroubled water
At all who marry in churches,
Through the white thin bone of a hare
http://www.bartleby.com/148/5.htmlA couple of thoughts on the poem,
you reach the celtic land of the dead by sea and yeats was traditional in these beliefs.
So I would see this singing of going home to the land of the dead and using the charm
of looking through the hare bone to see back to this ireland (where they marry in churchs compared to the old beliefs where you marry outside).