Frogging or Tinking

No matter what you call it, it is the same destructive process! I decided to pick the shawl up again and there was a mistake. I unraveled the whole thing and I am starting over. This is the third time and I have finally learned something! I am placing a stitch marker in the middle stitch of the last row for each chart. That way, I only have to frog back one chart at a time.
I am up to row 101. 67 rows to go and then the bind off.