I've heard secondhand about one person during the previous car promotion, who won the car 4 times across 3 different casinos and was told that this guy swore by the "current session coin-in" method. However, I'm inclined to believe that he was just extremely lucky, and helped his own chances out by playing $125 per deal (100-play for quarters). After all, if it was as easy as current session coin-in, I would imagine that there would be a lot more people willing to partake in a race every time one of the jackpot meters in town was approaching its upper limit.
I wanted to play on a special point day yesterday at a different casino, which I did. The problem was when I got to the Casino I checked on the website to see the progressives of this shoot down. Fiesta Henderson was 19,200. It was a tough choice but I decided to let it go and just play the point day I had planned on. I was lazy and didn't want to drive over there to play. I am not sure if playing 2 machines with the same card makes a difference but that is what I usually do if I don't have someone else with me. I ended up with a nice loss on the day and it isn't easy to get to 19k or over on that shoot down. I don't think I made a bad choice but I certainly know that playing for the shoot down would be much less variance since I would play something small and play slow. The Palms is over 15k now.