[10NL] Sets on mono flops

Been running into a few of these spots lately and not 100% sure how I should be approaching them so have selected a few to post up. I have tried to vary board texture and villains as much as I could.

Villain is 24/16/0 over 107 hands. CB 75%.

Had seen villain station with TPnK, A3s. B/c a c/r on flop, call PSB on turn and river.

PokerStars - $0.10 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

SB: $10.00
Hero (BB): $11.78
UTG: $10.00
MP: $14.92
CO: $10.25
BTN: $21.49

SB posts SB $0.05, Hero posts BB $0.10

Pre Flop: (pot: $0.15) Hero has 5 5

UTG raises to $0.30, fold, fold, fold, fold, Hero calls $0.20

Flop: ($0.65, 2 players) 5 9 J

Hero ???

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Villain is 28/23/13 over 111 hands. CB 50%.

Had seen villain station down with 44, unimproved, calling 3 streets IP.

PokerStars - $0.10 NL (6 max) - Holdem - 4 players
Hand converted by PokerTracker 4

UTG: $10.52
BTN: $22.97
Hero (SB): $10.24
BB: $12.84

Hero posts SB $0.05, BB posts BB $0.10

Pre Flop: (pot: $0.15) Hero has 3 3

fold, BTN raises to $0.25, Hero calls $0.20, fold

Flop: ($0.60, 2 players) 5 2 3

Hero ???

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BB - 20/14/3 over 219 hands. FTB on flop 62%.

CO - 38/17/5 over 203 hands. CB 70%.

PokerStars - $0.10 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

MP: $10.00
CO: $13.11
BTN: $10.45
Hero (SB): $11.04
BB: $16.03
UTG: $14.30

Hero posts SB $0.05, BB posts BB $0.10

Pre Flop: (pot: $0.15) Hero has 9 9

fold, fold, CO raises to $0.30, fold, Hero calls $0.25, BB calls $0.20

Flop: ($0.90, 3 players) J 9 A

Hero ???

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SB - 23/21/7 over 44 hands. CB 50%.

MP - 36/11/0 over 49 hands. FTB on flop, 27%.

PokerStars - $0.10 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

MP: $22.84
CO: $10.00
BTN: $19.45
SB: $13.37
Hero (BB): $10.00
UTG: $10.15

SB posts SB $0.05, Hero posts BB $0.10

Pre Flop: (pot: $0.15) Hero has 6 6

fold, MP calls $0.10, fold, fold, SB raises to $0.30, Hero calls $0.20, MP calls $0.20

Flop: ($0.90, 3 players) 6 2 7

SB checks, Hero ???

The later the player opens, the more suited cards they have so potentially the less likely I would raise.

1. c/r vs EP raiser, he has more pairs and prob lot of pairs+draw

2. Prob c/c since there is a straight and flush possible and he's btn raiser

3. c/c

4. bet ofc, 0.65-0.7

I'm never folding a set OTF. Partly 'cause Bovada = no long term stats. It would take a huge history with someone to convince me that they had a move that they only did when they had a set or better, and then I'd have to have the baby set to find a fold.

On mono flops, that's always a draw-heavy board. So I'd bet PSB or more and throw in c/r's when I thought Villain would spew a lot if checked to.

Hand 1: I'm going for a c/r and trying to get it in on the flop since I expect him to c-bet basically 100% of the time on this flop.
Hand 2: I'm leading the flop big here, possibly in the range of 1.25-1.5x the size of the pot since he has a piece here very often and isn't folding if he has any piece of this flop whatsoever. Some people might say fold pre, but I think it's a call considering how Villain is going to pay us off a lot on average when we hit (plus the small raise size to begin with).
Hand 3: I could go with leading to get in a bet against the likely passive/call heavy BB or checking to raise against the CO. I think I prefer check/raising here since the flop hits the CO's range in the face.
Hand 4: I bet pot or close to it here all day, everyday. The MP is a big calling station, and the SB seems like he's likely done with the hand, so you won't get anywhere by checking.

Id lead 3

Didn't notice hand 3 was 3-way. I would lead hand 3.