Last night, I was chatting with a BJ student when the
subject came up of "flooring" true count computations.

To make a long story short ... I told her to pay special
attention when the dealer pulls the final stub of cards
from the shoe.

Take a second to think about what deck estimation fraction
was used for the last round. Now adjust for the cards played
on the final round. DID you accurately assess the decks and
fractions of decks remaining? IF you were "off" by more than
1/4 deck, you need to go back to practicing deck estimation.