Flop size is not too large. Way to general of a statement and simply not true....I'm not sure what makes you say flop sizing is too large??? If you're betting flop polarized (which is likely the option) I don't understand how this sizing is too large. With some hands you could start overbetting flop vs UTG check....... if we make some assumptions about UTG's check and BB's flatting range, there are going to be a lot of hands that want to use a large sizings, even a couple of flop overbets, especially with how capped UTG will likely be.

Anyways his bluffing frequency when his draws miss and the 9 pairs is probably going to be a lot lower than flop (if that is even high to begin with) I think the 9 pair on the river makes me want to fold even more. Their frequency for bluffing this river spot is probably going to be too low. I don't expect a lot of his draws to x/r often at all either. We also block his draws. As stupid as it feels, I wouldn't hate folding vs the flop x/r just because the player pool WAY under bluffs this spot. and they are going to have 6 combinations of sets, and depending on how many off suit Ax they can have and T9o they can have they are going to have a shit ton of value. Folding vs the flop raise would be a pretty reasonable idea at this stake, turn, I am maybe inclined to call given that some of his nut combos are going to bet larger and the reason why we call is because we put him on some bluffs and those bluffs I think are slightly more likely to use this sizing than value. River Their frequency for bluffing is way too low....AT is a pretty clear value shove in his shoes.

I should've elaborated. I think it's a bit too large when in position multiway against such weak ranges, when betting a significant portion of our own range. I don't get why we would ever overbet the flop though, so much of UTG's range is one pair hands. I don't think that UTG having a capped range warrants overbetting in and of itself. What would be the other reason(s)? I'd expect UTG's calling range to be fairly elastic. I think there's more value in trying to get calls from a bulk of villain's range instead of having them fold most of it outright.

In general, yes, I think that larger sizings should be used when more polarized, and smaller ones with a condensed range, but I don't think that's the only factor in determining bet sizing.

Flop fold seems like a good idea to me. I would've folded the turn.

I think exploitavely if you want to try to play against the way most people construct their flop c-betting range and checking range here, and just use smaller sizings maybe it is ok, but the way we design our c-betting range is going to greatly depend on our flatting range. My assumption of these micro guys flatting ranges here is something like the following (and likely it is some what biased since i egoically want to prove my point right) I personally don't even have a flatting range in these positions, but this is what I'm assuming people will show up with.

I will also say if this opprotunity presented itself in a heads up pot, I am certainly going to include a flop overbetting range if this is my real flatting range. If they are over folding, we also should consider instead of overbetting hands like 88 or 77 at a small frequency, we should start to overbet those at an even higher frequency. Same thing with QT, KJ,KQ,JT etc. If they over fold then bluff more. I don't really care too much reguardless, this is just a stupid good board for our range and I'm probably overbetting flop in a heads up situation almost 30% of the time. Also I'm betting 100% of my range, and using a large sizings almost always. I may be more inclined to use a small sizing with AQ and AJ and mix that with 88,77,JJ,QQ, AT etc.

The whole spot depends on our flatting range.

We are going to make more money with our range if have an overbetting flop range in my opinion. I have also done a pretty good amout of work in these spots with this kind of range interaction after the oop checks.

I think folding flop is an option. Think about their range for flatting the BB, and their flop x/r range. Do you have enough equity to call flop?

I would just fold vs the flop raise. Obviously exploitable, which is going to net us more money at micro stakes where people way under bluff.