I finally got it!!!!!!!!!! I was starting to think I would never get a Royal Flush. Came home today and there it was. My final hand count is 75,096. I believe that puts me at second in the "most hands played without a royal flush" leaderboard, if there is such a horrible thing. It took about 4-5 months of boosting about 7-12 hours per day, 5 days a week, mostly while I was at work.
Here some fun facts of my other hand counts for anyone interested: 19 Staight Flush, 114 Four of a Kind, 1893 Full House, 2243 Flush, 3378 Straight, 3464 Three of a Kind, 17205 Two Pair, 32556 Pair, 12854 High Card.
To answer the question about which turbo controller I use, here is a link: http://www.gameasylum.us/xb360hotuex3.html. I think that site says it is back ordered, but you get the idea. I bought mine on eBay. Just do a search for Hori 360 Controller, but not the Fight Stick. The official name is Hori Turbo EX.
Also, you apparently can do this with any controller, as long as it is wired or you have a play and charge kit so that it won't turn off. I guess you just need to rubber band down the A button. Never tried it, I know that with the turbo controller if you get disconnected it will start the game back up since hitting A is all that is needed to go from the main menu to a single player game.