Guilty of slowplaying the underfull multiway?

[vanHelsing]

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">Hero ($190.30)</font>
MP ($337.30)
CO ($177.90)
Button ($156)
<font color="#C00000">SB ($226.15)</font>
BB ($200)

Preflop: Hero is UTG with 6[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/club.gif[/img]. SB posts a blind of $1.
Hero calls $2, MP calls $2, <font color="#CC3333">CO raises to $5</font>, <font color="#666666">1 fold</font>, SB (poster) calls $4, BB calls $3, Hero calls $3, MP calls $3.

Flop: ($25) 8[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">SB bets $20</font>, BB folds, Hero calls $20, MP folds, CO folds.

Turn: ($65) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $35</font>, <font color="#CC3333">Hero raises to $90</font>, SB calls $55.

River: ($245) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $80</font>, Hero calls $75.30 (All-In).

Final Pot: $400.30

Results in white below: <font color="#FFFFFF">
SB has 8c Kd (full house, eights full of kings).
Hero has 6d 6c (full house, sixes full of eights).
Outcome: SB wins $400.29. </font>

I tried to suck in the Flushdraws on flop and planned to speed up on turn, but it fired back badly.
Is playing it faster standard under these circumstances?

[mgsimpleton]

yah you generally don't want to let someone draw to three outs.

no, that's a lie. listen he's not going anywhere with K8, so the point of playing it fast is not to let the scare card, the spade, slow him down. it has nothing to do with letting him catch his 3 outer. I don't mind slowplaying for a street multiway as it will let more people draw to weird crap, but generally I try to raise an amount that still looks delectable to draw with (2/3 pot) but will allow an 8 to get it all in right there.

[vanHelsing]

I count 4 outs, but I can see what you say.
Sounds very reasonable. Thanks.
Edit: oops, just noticed I've posted in wrong forum, sorry guys.

[mgsimpleton]

3 hidden outs, sorry. if another 8 peels off, you getting stacked? [img]/images/graemlins/smirk.gif[/img]