1/2 home game, 5/6s am I in trouble on the flop?

[Bluegrassplayer]

SB is a very LAG player, more often dumping to the table than not. UTG +1 is a very solid TAG player, and the cut off is a semi-solid player who plays a lot of mediocre hands when he gets deep stacked in the hope of cracking a big stack.

SB: $225
BB: $195
UTG: $200
UTG+1: $285
5 Seat: $155
6 Seat: $55
CO: $475
BTN (You): $695

Preflop: You are dealt 5 [img]/images/graemlins/diamond.gif[/img] 6 [img]/images/graemlins/diamond.gif[/img]
UTG folds, <font color="red"> UTG +1 bets $12 </font>, 5 Seat folds, 6 Seat folds, <font color="red"> CO calls </font>, <font color="red"> You call $12 </font>, <font color="red"> SB calls $12 </font>, BB folds.

Flop: ($50) 7 [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/diamond.gif[/img] A [img]/images/graemlins/spade.gif[/img]
<font color="red"> SB bets $35 </font>, <font color="red"> UTG +1 calls $35 </font>, <font color="red"> Co calls $35 </font>

You do what? Now this is a very unusual circumstance at our game. SB is capable of betting with anything, but when UTG +1 calls, I'm almost sure that they are sharing aces, with UTG having a much better kicker. I have no idea what the cut off has. It's possible he has a straight draw, or a higher diamond draw, so I'm at a loss as to what to do here. What actually happens is that I get time called on me and end up putting in $35. Now the turn is a great card for me, making my decisions much easier, so I'd like the biggest amount of criticism/ input for this street.

<font color="black"> Turn: </font> ($190) 6 [img]/images/graemlins/club.gif[/img]
<font color="red"> SB bets $60 </font>, UTG +1 says he knows he has the SB beat, but has no idea whats going on behind him and folds. <font color="red"> Co calls </font>,

hero does what?

Almost certain that the CO has diamonds now, if he was chasing any straight draws, he almost certainly hit, and he would definitely have pushed. The weak bet from the SB also makes me convinced that he's playing a weak ace, certainly not 2 pair so the turn gave me 5 additional outs. What do I do here?

[Conan776]

&gt;Almost certain that the CO has diamonds now,

Then shove him off the competing draw. If you can win with any 5, 6, or eight, and have the only d-draw left, I think you're odds are good, if not you've got outs with a made pair (say if SB folds and CO does not). You'll have good Fold equity anyway, since your call on the flop looks like a smooth call with a monster.

[Bluegrassplayer]

Well thats ultimately what happened. The major decision here was on the flop, and I think I made the worst of the 3 options, I should've either folded or raised in my opinion. I figured on the turn that I had 9 outs for sure, (4 gut shot, 2 trips, 3 for two pair) and if I got the other diamond draw to fold this would jump to 15.

[BigBiceps]

Since the ace is a spade not a diamond the reverse-implied odds that you are drawing to 1-4 outs should make you fold the flop.

[Bluegrassplayer]

I was about 90% positive that a/x of diamonds was not there. The SB almost certainly didn't have that, and when UTG+1 just called instead of raising I was pretty certain that he didn't as well. If anyone had diamonds it was almost certainly the cut off, but I doubt that he had the ace of diamonds as well. I am leaning towards a fold here now though due to the fact that it's still a 4 outer.

[FireStorm]

People are going to hate this, but I'm in agreement with folding the flop. Tough to do, but someone has to have higher diamonds in this spot just about every time. If no one does, it's going to be next to impossible to get paid off.