reraise river-bluff time?

[gomberg]

I'm usually a NL player but play some 6-max limit once in a while. Was looking at some hands I've played and this one caught my eye.

I've been playing 15-30 5 handed at this point for about a 1/2 hour and have been pretty tight and only showing down winners.

UTG limps (pretty straight forward so far in session), folds to SB who raises (pretty aggressive / semi-tricky this session but I've beaten him in a few pots, so he may be 'afraid' of me). I call in BB w/ T2s (this is usually a fold, right?). UTG calls. 3 to the flop.

flop: 5s7c8s. SB checks, I bet, UTG calls, SB calls.

turn: 8c. SB checks, I bet again (good bluff card), UTG calls, SB folds.

river 5d. I bet out $30, UTG raises to $60, Hero... should this be a reraise in this spot?

[BigEndian]

I really don't see how RRing wins you the pot enough times to justify it against the pot odds.

- Jim

[gomberg]

Well, I'm risking 2 BB to win 9.5 - so he needs to fold ~17% of the time to make this worth it (is my math correct?) - From the way he played this hand, it really seems like he will fold more often than this, right? This guy would have probably raised a made hand at some point unless he had a monster.

[jogumon]

You're hoping that the guy who has played completely straightforward up until now has decided that now is the time for a river raise bluff? At a time when your play screams "I have an 8".

Against a player you know is capable of doing this, ok, but when your read indicates that the opponent would most likely never do this, it's a bad 3 bet.