I deal a lot of charity events and any tip is appreciated especially since we are only getting an hourly wage. Tip according to "service". Were your cards dealt to you or in your general vicinity? Was the dealer polite and friendly yet not biased and making unnecessary comments on the hands (in other words: were they professional)? Did they read hands efficiently, accurately and quickly? All of these go into my consideration of tips. And the cash-money tournies in which I do play it's usu. 10-15% of my gross winnings depending on the service of all the dealers. Good luck 2 u.....