counting with shuffle machines

Hi, could my idea work.
I live in the uk and all my casinos use shufflr machines which i have read cannot be counted, fair enough, But i had an idea.

In my casinos you can bet behind ppl that is if the table is full (they always are)you can stand behind them and place bets on there spot behind there chips (as many spots as you like).

Now heres the thing i have noticed a lot of dealers wait untill 2-3 have been dealt before putting them back in machine .

So would it be possible to stand behind a good player keeping a count untill it is up then bet behind in the small window of 2-3 decks before he puts them back in machine.