Playing readless, cbet flop should be best. With that small cbet sizing I guess we can induce more bluffraises than with a half pot sized one. Should we really fold here readless? Think people will play more honest in a 10x with checkraises?
Would you prefer a t40 cbet here more though?
If turn had gone check-check, how big of a bet would you call on a blank river?

PokerStars - $14.10+$0.90|10/20 NL (3 max) - Holdem - 3 players
Hand converted by PokerTracker 4

SB: 480 (VPIP: 31.03, PFR: 22.22, 3Bet Preflop: 8.00, Hands: 151)
BB: 610 (VPIP: 100.00, PFR: 100.00, 3Bet Preflop: -, Hands: 2)
Hero (BTN): 410

SB posts SB 10, BB posts BB 20

Pre Flop: (pot: 30) Hero has J 5

Hero raises to 40, fold, BB calls 20

Flop: (90, 2 players) 5 3 A
BB checks, Hero bets 34, BB raises to 68, Hero calls 34

Turn: (226, 2 players) 7
BB checks, Hero bets 85, BB raises to 283

Yes. Not necessarily, but possibly. Yes. Depends on what the river card is, but roughly half pot or less I'd call.

That line is pretty strange. With just a 5 I'm folding there. I probably would have checked back the turn though. I think he had a weak ax hand and raised the flop with the plan to fold to another raise. Maybe then he was planning to check back the turn and get value on the river, but when you bet small he puts you on a draw and raises, because now there is no value he can get on the river if you miss and he wants to make you pay to chase your draw.

I don't think raising a weak ax hand in his spot is a good idea, but nevertheless people do it and based on the double check-raise I think that is what he had.

Who knows, maybe he had a monster draw, 6 4, or complete air. Either way I think 5x is not good enough to continue with. You need at least an ace.

Why u bet ott?

I mean, check back flop haha

Flop cbet is fine, as is checking. Betting t40 is worse then betting small with this hand.

As played check turn, and as played clear fold to the raise.

So GTO bets wider range with smaller sizing here, right? I guess that I fell in love with GTO, hehe.

Looks good.

Yeah with smaller sizes you can vbet thinner (and therefore wider) since you get wider calls You get some bonus value from protection too since this board is so strong for us.

What about turn going check/check and he bets a blank river? How big of a bet you guys willing to call?

I think that will depend on the river card, but I think usually it is going to be a fold unless the bet size is pretty small. If the river card is a high card like a king or queen that doesn't complete a draw I'd be more likely to call.