First off, they don't contribute to national databases so the risks of playing rated are reduced. Secondly, I never play there more than once per month and am careful to rotate days and shifts. Thirdly, I limit my wins. Fourthly, I do things to minimize the appearance of how much I win. Fifthly, I never spread to more than $400.
I only see you mention this place in regards to the DD game. They do have a very good 6 deck game, one of the better games in Las Vegas. Do you play that as well? I would think mixing up the two games would have some benefit.