Ok here is my take on this problem.
1. I use index cards as row markers with pressing direction arrows on them. I cut them from the index cards and pick up each row starting from the marked block. I do this for each row. I use a black sharpie marker. I am looking into printing mine on the computer.
2. You can take a photo of the whole quilt or the 4 parts (ie each corner to the middle). Use the photos for placement.
3. Use the index cards on every block 1a is top left block first row. 1b is first row second block etc...
I am sure there are many more ways to keep the rows organized. These are mine! Good Luck! Luann in Rainy CT