The turn CR looked like the right play, but perhaps I should've made it 50. Who bets river? Calling a push?

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) from (Format: Bet The Pot)

CO ($29.85)
Button ($141.95)
SB ($99)
Hero ($100)
UTG ($129.10)
MP ($206.10)

Preflop: Hero is BB with , .
UTG calls $1, MP calls $1, 1 fold, Button calls $1, SB completes, Hero checks.

Flop: ($5) , , (5 players)
SB checks, Hero bets $4, UTG calls $4, MP calls $4, Button calls $4, SB folds.

Turn: ($21) (4 players)
Hero checks, UTG bets $8, MP calls $8, Button calls $8, Hero raises to $30, UTG calls $22, MP calls $22, Button calls $22.

River: ($141) (4 players)
Hero checks, UTG checks, MP checks, Button checks.

Final Pot: $141

Results in white below:
Hero has 6d 6c (three of a kind, sixes).
UTG has 9c 7c (two pair, nines and sevens).
MP has 8c Ac (high card, ace).
Button has Qd 9s (two pair, queens and nines).
Outcome: Hero wins $141.

Yeah your raise on the turn was wayyyy too small. That is an extremely draw heavy board, and everyone seems to want to be a part of the pot. Make it like $60.

Wow, with that many callers on the turn to the $8 bet(although this seems results oriented to me, sry), pushing might be ok on the turn too. It's a huge overbet I here, but there are no good cards on the river except quad sixes here...and at the same time, it look like you are far far ahead with the action there. I think a pot sized bet is $53 right, and probably the right raise is $60ish, but like you said, the board there is crazy still and everyone still seems interested in the pot, although they aren't willing to bet it which screams to me semi strong hands. And I don't mind winning the pot now if I think I have the best hand, which I am sure you thought you had. CRAI and protect that nice pot. Plus, there might be the added benefit of someone trying to sniff out a bluff here and call with a decnt but dominated hand. I think you would clear out draws and only be up against those with a decent hand here...but most of the time, you just win the pot and not have to worry about all the bad cards that could beat you.

I don't think I'm surprised that no one bluffed the flush...it's alot easier to do when there isn't three other people in the pot who can easily CRAI any river bet with a made flush. Yawl kept themselves in line.

Anyway, this situation doesn't happen too often(online...live it happens alot, and must be treated differently IMO). But, I liked it...makes you think about some of the possibilities and the play of multiple opponents. Nice OP.