Oh Please!!!!!
Surveillance is going to take a look at any sizable hand pay jackpot. It only takes a few seconds to review the actions of the play. Strip casinos, such a jackpot is routine, so isn't going to draw that much attention, but still they wouldn't be doing their job if they didn't review it for a few seconds.
Mid-sized casinos, like Stations, Boyds, South Point, and I will include Silverton, even though a little bit smaller, surveillance is absolutely going to take a minute and review the win. And any casino smaller, players playing the limits Rob claims is so rare they will absolutely scrutinize the play.
Now look, here is the play: Player hits a jackpot. He then inserts more money into the machine which triggers the option to change denomination.
That is NOT freaking normal actions. Nobody inserts more money immediately after hitting a jackpot like that. This action would ABSOLUTELY be noticed.
Maybe you get some sleepy, surveillance that just doesn't give a damn, BUT you sure aren't going to go 5 and a half years tricking competent surveillance crews with this play. Not a chance in hell.