I used a 1-5 spread at some of the best games in vegas, on the strip... It seemed I had heat pretty early on, but I think I was red flagged from the time i gave them my players card because of my previous trip where i played 10+ hours with a 1-10 spread. However I continued to play many many hours at two casinos in particular, the heat seemed to continue to grow and so did my spread as I won more money and I got closer to the end of my trip. During the last hour of play I was spreading $100-$1000. I believe the dealer was a card counter as he went and reported to the PB after every other shoe or so. It didnt help that i seemed to just keep winning and winning. It was getting late The amount of suits kept growing and I placed my last bet at the end of the two decks. As I was walking out they stoped me and informed me that I'm now flat betted at these two places. Overall I must have played around 14 hours at these two casinos over a couple days and I won about 17k. Unfortunately I lost 12k across the street! Overall I still ended up with a small profit for my trip. Obviously I overstayed my welcome!