Have you had success forcing a pref shuffle in negative count?

[21forme]

Casino I sometimes play is known to pref shuffle. I believe they do it based simply on bet jumps and not counting along.

Anyone had success getting a reshuffle by jumping a bet in a negative count? If so, how long before they caught on to what you were doing? Any caveats?

 

[NightStalker]

yes

There is a place which prep-shuffle if I can make any +ive index play like
double 10Vs10/A, insurancem 8Vs6..
I've used those doubles in -ive count to call for prep-shuffle...

But then again, it is not a successful idea..