yup, usually they have their own gambling tricks. and they dont really tell it to anyone. they just wan to keep the profit to themselves cuz if too many people know about this then the casino will do some changes and their method will be ruin.
Sure and then this big winners of money don't know where to spend those big amounts of money won and make donations to the society of the failed gamblers, the society of less lucky then those gamblers, the society of depressed gamblers, the society of happy gamblers (even they lose always in gambling) the society of the gamblers who don't know any trick to win money in gambling, the society of of the gamblers who are unable to find or learn strategies how to win in gambling and to to many other societies connected with the gamblers.