Well, "drag" would make sense, I guess, since they were dredging, but the BP did learn it from a written source, so...

If you're anything like me, Charley, your poor ol' brain won't let you change the way you sing it at this point in any case. It's called the "folk process," I believe.

Good to see you in Maine a couple of weeks ago -- hope it's not too long till I see you again!

Nancy