Played too weak?

Quinner

At first I thought he hit trip 8's on the turn but his river bet suggested otherwise. Should I have re-raised on the river? Or any other point in this hand?

PokerStars Game #28265308977: Tournament #164196749, $3.00+$0.40 Hold'em No Limit - Level II (15/30) - 2009/05/16 13:42:42 ET
Table '164196749 1' 9-max Seat #9 is the button
Seat 1: flyingyahoo (2125 in chips)
Seat 2: doomwatch (1735 in chips)
Seat 3: laurrie21 (2750 in chips)
Seat 5: mmaaggoo (1645 in chips)
Seat 7: 0darkdog0 (1310 in chips)
Seat 8: OHADILOH (2700 in chips)
Seat 9: Quinner777 (1235 in chips)
flyingyahoo: posts small blind 15
doomwatch: posts big blind 30
*** HOLE CARDS ***
Dealt to Quinner777 [Kc Kd]
laurrie21: folds
mmaaggoo: calls 30
0darkdog0: folds
OHADILOH: folds
Quinner777: raises 90 to 120
flyingyahoo: folds
doomwatch: folds
mmaaggoo: calls 90
*** FLOP *** [8d 6s 4h]
mmaaggoo: checks
Quinner777: bets 150
mmaaggoo: raises 150 to 300
Quinner777: calls 150
*** TURN *** [8d 6s 4h] [8s]
mmaaggoo: checks
Quinner777: checks
*** RIVER *** [8d 6s 4h 8s] [Js]
mmaaggoo: bets 240
Quinner777: calls 240
*** SHOW DOWN ***
mmaaggoo: shows [9h 9d] (two pair, Nines and Eights)
Quinner777: shows [Kc Kd] (two pair, Kings and Eights)
Quinner777 collected 1365 from pot
*** SUMMARY ***
Total pot 1365 | Rake 0
Board [8d 6s 4h 8s Js]
Seat 1: flyingyahoo (small blind) folded before Flop
Seat 2: doomwatch (big blind) folded before Flop
Seat 3: laurrie21 folded before Flop (didn't bet)
Seat 5: mmaaggoo showed [9h 9d] and lost with two pair, Nines and Eights
Seat 7: 0darkdog0 folded before Flop (didn't bet)
Seat 8: OHADILOH folded before Flop (didn't bet)
Seat 9: Quinner777 (button) showed [Kc Kd] and won (1365) with two pair, Kings and Eights

jdAA88

I think I would have 3bet the flop / got it in.

Graham

I think you played it pretty well, other than maybe not pushing back on the flop (min raises are always odd). But I guess maybe you didn't want to show too much strength. The 2nd 8 is obviously gonna slow the action right down though.

Henjon

With KK on this type of boards (no obvious straight or flush draws and not likely that opponent catched a two pair) and a single opponent, my guess is that the right play on the levels we are playing is to go all the way and play it as tough as your opponent is willing to play it. Sure sometimes you will run into a set (AA would re-raise you preflop). But most of the time you will have him beaten.

I think I'm a little to weak myself in this situations. Bet on the turn, and -as played - re-raise him on the river instead of just calling. Especially a smaller re-raise might get him curious enough to make a call and thereby increase your profit on the hand! But I can remember plenty of times when I just called the river in similar situations..