PamlicoTraveler,
The Navy used to publish a table of coordinates defining the north wall of the Gulf Stream off the East Coast. I used it in 2005 to plot points in my laptop navigation software for route planning from the Abacos to the Chesapeake, around Cape Hatteras. I think it used to be on this page, but for the life of me, I can't find it there now. They do have some nice graphical formats, but the coordinates were very handy.
NAVMETOCCEN NORFOLK VA HOMEPAGE