There are different hit and run instances IMO. The player that sits down, bets go in,and then he/she goes all in and gets calls, wins, and then leaves. Could be their whole bankroll, maybe tried to double up for a buyin tournament, or something came up. This is different from the player that has been sitting at a table and then only a couple players there , all in pot, and he sucks out on the river and wins, and THEN leaves and the players cannot even try to win their money back. That is something I am not fond of, they can just play a coupld more rounds and fold if they want to but not just run off. But they have the right if they want but thats why I keep notes so I can remember them kind.