I accidentally call the flop, then bluff my way to the river

[jcm4ccc]

scare cards hit on the turn and river, so I took a stab at it.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

MP3 (t1500)
CO (t1560)
Button (t1460)
SB (t1480)
Hero (t1500)
UTG (t1520)
UTG+1 (t1500)
MP1 (t1480)
MP2 (t1500)

Preflop: Hero is BB with 8/images/graemlins/heart.gif, 4/images/graemlins/heart.gif.
(bWo)4Life calls t20, UTG+1 folds, MP1 folds, MP2 folds, MP3 folds, CO calls t20, Button folds, SB completes, Hero checks.

Flop: (t60) 5/images/graemlins/spade.gif, A/images/graemlins/spade.gif, Q/images/graemlins/diamond.gif <font color="#0000FF">(4 players)</font>
SB checks, Hero checks, (bWo)4Life checks, <font color="#CC3333">CO bets t60</font>, SB folds, Hero: calls t60, (bWo)4Life folds.

Turn: (t180) 5/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t120</font>, CO calls t120.

River: (t420) 6/images/graemlins/spade.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t100</font>, CO calls t100.

Final Pot: t620

Results in white below: <font color="#FFFFFF">
Hero has 8h 4h (one pair, fives).
UTG doesn't show.
CO has Ac 7d (two pair, aces and fives).
Outcome: CO wins t620. </font>

[bigredlemon]

Either bet more or get out. I'd do the latter. You're not going to scare you off with 1/2 pot and 1/4 pot bets for 1/10th of his stack. Presuming you did hit trip, you're not going to bet out into the aggressor, so doing so looks like bluffing on a scare card. If you had to bluff, I'd check raise him all in. He can't call that without a 5 or a good read on you. (I wouldn't have bluffed at all given how loose some early games are. I've seen people call down all ins with top pair 7 kicker on a suited board.)