I'm looking for a method under anchor that will return the actual doc position of the anchor.

Essentially this is the exact same code chunk used by draw(...) in AnchorPoint.

I've changed anchorpoint to include the code:
    public PointF AnchorToDoc(RectangleF nodeRect, float angle)
    {
     float cX = nodeRect.X + nodeRect.Width * x / 100;
     float cY = nodeRect.Y + nodeRect.Height * y / 100;

     PointF point = new PointF(cX, cY);

     if (angle != 0)
     {
       point = Utilities.rotatePointAt(point,
         Utilities.getCenter(nodeRect), angle);
       cX = point.X;
       cY = point.Y;
     }

     return point;
    }
   
but you can probably find a better place for it...