Mirage 5-10 Omaha8: Why not bet the river

For the record, I have never played Omaha 8 or better. However, I have considered playing the game to give myself more options when I'm at the Vegas cardrooms.


While hanging out at the Mirage this afternoon, I witnessed a friend play this hand.


Based on my limited knowledge of the game, it seemed most of my friend's opponents were very poor. Many were showing down hands like Jd,8c,7c,2h and winning the high with two-pair.


My friend is in early postion holding Ac3d5s9c and limps. Three more players play their hands and the flop is seen four-handed.


The flop is: Kc,Qc,5c


That's quite a flop. He's got the nut flush and bottom pair.


My friend bets and gets one caller.


The turn is: Kc,Qc,5c,5d


Now he has trips to boot.


He bets and gets called.


The river is: Kc,Qc,5c,5d,3s


Now he has a full-house. My friend checks and it gets checked by the other player. I didn't ask him why he checked.


Do you think this was a good situation to go for a river checkraise against a smaller flush? Or, with a paired board, is it reasonable to be suspect of a bigger full-house?