And lastly would you even bother trying to count cards in a six-deck game? . The game is dealt face up from an 8 deck shoe, with the cut card appearing after.
In a typical 6 deck shoe, each additional true count point gives the player a 0.5% advantage. When the shoe True count + 8 or more, bet 5 times your base unit.
Las Vegas discussion forum - Card Counting, 8 deck & cutting card, page 1. And for example, a dealer started with a new shoe. And out of Employees card counting? - Blackjack - Gambling - Page.