3-5NL $10 utg straddle, 8-handed, effective stacks $1500
H AcJs opens to $40 in HJ
V in CO calls
Two players to the flop: ($90) Ks Qd 5s
H $90
V calls
($270) Turn Ts
H $260
V $600
H calls
($1470) River 8c
V all-in $770
H ???

Should I have bet smaller on the flop?
Should I have checked the turn, or bet smaller?

Over 2 hrs, V has not played many hands, but has called a few raises in late position and hit boards to make nutted hands.
H has only opened a few hands, which he had to fold before the river. H has been card dead, has only won 1 small pot in 2 hrs.

I don't see the point of the pot cbet with not much on a board that should hit both players often. I don't like the pot turn bet at all with straight on a flush board. As played, I would fold to the turn raise.

When you bet pot on the flop and on turn and still get raised villain is indicating they have a flush. Their betting size indicates they plan to shove river. In this sort of situation you need to plan what your doing on the river when you call turn. You need to decide on the turn if you think villain is bluffing, if not then fold to the turn raise.
Your flop and turn bets are too big. Flop should be around $60 if you bet at all. You should be checking and giving up some of the time on this flop also.
Turn bet is a bluff, once the flush comes in a bet that big is only likely to be called by really good hands. The bet not only largely limits opponent to hands that beat you but also gives hands as good as two pair and sets fold.

Yeah, I think check the turn, as you only have a bluff catcher. When you get raised on the turn after potting it, it is just a fold. Not that many at 3/5 are going to bluff raise a pot bet.

Any reads or stats on villain? One thing to look for is their breathing. If you can see veins throbbing on their neck and their chest oscillating a couple inches as they breathe that's almost always the nuts and they're praying they're about to get rich. I've never played 3/5, but from what little experience I've had, 2/5, 1/3 and 1/2 very very rarely raise the turn without the nuts.

On the flop, with an inside straight and one over card, you are behind the CO’s calling range. So unless you have a read, check/fold the flop.

He didn't just raise the turn, he raised a pot sized bet on the turn. If he had the nut flush, it might be better to flat call, but that is likely what he had, because OP was representing a flush. I just don't see this ever being a bluff at 3/5, which I assume plays like 2/5.

Technically, he could be raising with the nut flush draw and nut flush blocker. I remember raising the turn in a small pot with that on a flush board and a reg snap folding.

Really bad play on the flop and at both decision points on the turn. Yeah, you made broadway, a nut straight, but on this board it is like 2nd pair on some other boards.

Turn is probably a bet but your sizing is way too big. A lot of the big spades are accounted for. We want to get value when we have good hands.

Also no need to pot flop, he will have a lot of hands that need to fold to any sizing.

I don't mind a largeish flop bet to drive out Qx etc, but when you go this large and get called you're up against Kx or a flush draw (probably NFD) a lot of the time. When you go big again, do you expect any of the Kx to call? If you had the nut flush draw yourself I'd be more inclined to barrel (but not anywhere near this big). As played, what nut flush draw ie AXo do you expect him to have called the flop with? The only thing you have in your favour is that all the big spades apart from the Ace are accounted for.

Thanks for the replies. I played this hand really poorly, and it's good to break it down afterwards.
Such a bad turn bet, and really should have folded there after being raised.
I folded the river. V didn't show.

Grunch:

PRE - looks fine, though $40 may be too big at this stack depth. Why not $30?

FLOP - just check from OOP with our ISSD. If he bets, depending on the size, we can flat call or check-raise.

TURN - I think there's nothing a pot sized bet will accomplish here that a 2/3 pot bet wouldn't also accomplish, the difference being we lose less when we're beat.

V's turn raise is suspect. He almost certainly has the As in his hand, but he can't have AKss, AJss, ATss, or A5ss.

He's basically repping EXACTLY AQss, or maybe A9ss, a hand that had some two-way BD BS on the flop, and I'm somewhat skeptical he'd raise when he turns the nut flush and you're blasting off, going pot-pot with your bet sizes. This smells fishy AF to me.

I think you made the correct decision to call his turn raise. I think you have to call his river jam. Our hand is too strong too fold, given the card removal, and how few nut flushes he can actually have here.

Remember that he doesn't know we have the Js in our hand, or that we have a straight on the turn. From his perspective, if he has AsQx, he had a good hand to continue on the flop and make this play on the turn and river. He blocks the nut flush, and Broadway. We can have a ton of 2P and worse hands that are just insta-folds on turn, and rage-folds on the river.