In the Oklahoma locations that Peter Liston described it takes an AP with multiple skills. Sitting around waiting on Mystery Progressives to ripen will get real boring really fast… First, there are a host of other slot games that offer short term positives, although I can’t say that any of them are in Oklahoma. But one should do everything they can to learn those games too. And I think the real money in Oklahoma would be in the live poker games. Grinding poker and working the MP’s would be what I would be looking at if I were there…plus anything else I could find.
Oklahoma poses somewhat of a problem for professional gamblers. They are one of the worst states for civil asset forfeiture. There are warnings over the internet about traveling though Oklahoma across I-40. There are about a dozen counties involved and the police in every county are profiling long distance drivers for the potential of carrying large sums of cash. They can even seize the money on your prepaid debit cards.
Additionally, I know that there is a sizeable team working Mystery Progressives and all the other exploitable slot games. Their territory runs on both sides of the Mississippi River from Minnesota to New Orleans.