I place a chip on top of my bet, that way if I win,dealer will only get the one chip I won > If i'm playing a green chip & think its time to tip i will place a $30 bet ,throw dealer the $5 I won & take my bet back down to $25 keeping the $5. I have had dealers ask if that is their bet ,would I place it out side of the box. NO,NO. Soon they will catch on.