Nothing is "proprietary" -- nor does anyone have proprietary information unless they perhaps are selling something or have invented the car that gets 100 miles to a gallon of gas -- and then out of fear to reveal the secret -- they go to their grave never having benefited from doing something with their proprietary information.
The fact that you were aware of options expiration indicates that you already have knowledge of options trading.
With that in mind, I probably will not "knock myself out" in an effort to post here. BoneCrusher, if you have a profitable method for you -- then just keep trading it -- no need to add more to your method of trading or your disciplined system. Good Luck. Should you want the answers to the " what about finding an actual arbitrage opportunity in the numbers, and finding them frequently enough? What is looked for? " Then if PM me and I can fulfill that request. There will be numerous examples I can send you depending on which ones may fit your account size and or the underlying contracts you are trading.
Hi MACD, your article interest me a lot. Please continue writing if you can find time. Thanks~