PLO5 KJ1010ds

You should fold flop vs that big of a raise since you have 6 clean outs and OOP.
And I also wouldnt 3bet pre but its probably not bad.

I wouldn't 3bet, just call and get the BB along.

On the flop when he pots, he has something strong. You have 8 outs to straight but only 6 of those doesn't make th flush. That is not enough to call the flop.
As played I would bet the river as it is unlikely he has a full house (he didn't bet the turn).

^ Do you think its possible he slowplays a boat OTT at these stakes IP? Also what size do you think is good to bet OTR. Even his QJxx are shit here since KKxx+ beat him, so big bet would probably make him fold often?

Unless you have seen him slowplay boat there IP, I would always assume that he isn't. On the river the betsizing has to be small, as he can't have anything strong to call you. Maybe some KK, trips, funnily played AA, QJ (that doesn't realize/care that your overpair would beat him). I don't think he is bluffing there a lot f times.

I'd resteal with this hand as well. But bet flop. This is kinda suxx if he pushes, on average you hit this flop much better than the normal wide btn open. And you have possibility to continue the aggression on the turn.