Of course, then you can't play anymore, since quitting isn't pausing.
So I guess the next step is to find multiple games to use for "quitting when ahead." Heck, maybe record the serial numbers of individual machines and count each of them as an opportunity to quit when ahead. There's gotta be 30,000 vp machines in Nevada (out of 160,000 slots overall), so you should be able to make a ton of money.