This year with Celeste and Tiger I left them on till they hung straight down ,dead soft, outer skin split, color ran up through the neck.
When the Tiger made it all the way plus a drop of sugar syrup at the eye, they were chewy near the eye,like sweet gumdrop. But only 3 or 4 made it this far.
It is allways a waiting/gamble with the rain,splitting,and the animals.
Luck
Dave.