Hand 1:

The villain is a decent reg.

PokerStars - $1 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

BTN: 130.38 BB (VPIP: 21.88, PFR: 18.75, 3Bet Preflop: 21.43, Hands: 34)
Hero (SB): 315.61 BB
BB: 367.15 BB (VPIP: 19.40, PFR: 11.94, 3Bet Preflop: 8.33, Hands: 69)
UTG: 111.21 BB (VPIP: 26.48, PFR: 21.72, 3Bet Preflop: 6.29, Hands: 1,156)
MP: 100 BB (VPIP: 19.98, PFR: 15.97, 3Bet Preflop: 7.66, Hands: 1,791)
CO: 242.28 BB (VPIP: 20.79, PFR: 12.38, 3Bet Preflop: 2.44, Hands: 209)

Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has 6 8

UTG raises to 3 BB, fold, CO calls 3 BB, BTN calls 3 BB, Hero calls 2.5 BB, fold

Flop: (13 BB, 4 players) 5 Q 8
Hero checks, UTG checks, CO checks, BTN bets 6 BB, Hero calls 6 BB, UTG calls 6 BB, CO calls 6 BB

Turn: (37 BB, 4 players) 7
Hero checks, UTG checks, CO checks, BTN checks

River: (37 BB, 4 players) J
Hero bets 26 BB, UTG raises to 102.21 BB and is all-in, fold, fold, Hero ???

Hand 2:

Please take a close look at the board texture.

PokerStars - $1 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

BTN: 88.41 BB (VPIP: 9.43, PFR: 7.55, 3Bet Preflop: 0.00, Hands: 54)
SB: 100.5 BB (VPIP: 16.20, PFR: 12.29, 3Bet Preflop: 10.26, Hands: 185)
BB: 111.44 BB (VPIP: 21.47, PFR: 16.21, 3Bet Preflop: 7.67, Hands: 6,229)
Hero (UTG): 105.74 BB
MP: 101 BB (VPIP: 22.69, PFR: 11.97, 3Bet Preflop: 3.73, Hands: 416)
CO: 115.51 BB (VPIP: 25.37, PFR: 20.33, 3Bet Preflop: 10.74, Hands: 638)

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has A A

Hero raises to 3 BB, MP calls 3 BB, fold, fold, fold, fold

Flop: (7.5 BB, 2 players) 7 6 8
Hero bets 5 BB, MP calls 5 BB

Turn: (17.5 BB, 2 players) 4
Hero checks, MP bets 7 BB, Hero calls 7 BB

River: (31.5 BB, 2 players) Q
Hero checks, MP bets 20 BB, Hero ???

1st one is weird. I'd probably bet the turn. As played fold. UTG can have better flushes and could be checking turn to go for a check-raise. He shouldn't be bluffing here like ever.

2nd one is a call on the river imo.

Yeah, I think so.

Hand 1, he probably thinks that he must with nut flush and that's probably exactly what he has but I disagree with him though I think raise/shove is too too strong for value and better for bluff especially when he sits on UTG.

Hand 2 guy did have SF but bluff/worse is, is, is, possible? I wanted to fold Hand 2 on river.

Hand 1: I'd fold and be 100% happy. The villain seems reggish enough that if he had anything other than a flush here with 4 callers he knows hes beat. When he shoves Its almost never a lower FD.

Hand 2: I think your hand is underepped and its like a 50/50 between him having the SF and the K

iz da best "flydonkfly"

X/minR / fold is optimal in hand 2

+1