PLO50 KJT9ss 3bet pot straight on monotone flop

think overall im quite fine with that line against pure unknown.
the question would be with what size to bet?
betting big has not much sense as we have decent showdown value. could argue for betting pretty small like 8 to 15bb maybe, unblocking A, Q. but for that sizing wont fold any flush too, most likely and villain could have quite a good amount of weak flushes with that line too imo, in opposite to check, check, check, f.e.

I checked this spot in trainer and I was kind of surprised that our hand would go for triple barrel value. Flop 1/3, turn 3/4 and river shove on blank runout. Though it does make sense with this combo. As you said we unblock A and Q and we have flush blocker. Still triple barreling is kind of wild but I definitely see point in double barreling. But yeah this is kind of specific board and spot as straight usually is looking for small value. But I think solver wise the main reason is tight squeeze range from BB and with three high cards on flop its actually quite tough for BB to have much flushes. Well actually in trainer I checked it as MPvsSB HU pot.

With the way I played there could maybe be space for small river bet, Some issues in real life could be with unknown having too wide 3betting range and thus actually more flushes and less AA, QQ, AQ type hands.

I think it´s played well.

I would not shove the river as the average regular defend way less than solver usually folding his top- & middle sets too, Idk how much the PLO50 reg is even using blockers to optimize his play, most bad regs tend to just play their actual handstrength so call flushes fold the rest I´d say. It might be a slim shove against bad players that stack-off without flushes on monotone boards, I guess I´d prefer to have a note here. I think the check-back otr is fine against unknown as there are not enough players that use worse hands than flushes to call us but if Villain would have checked the turn I can see a protection/value bet there against the non-flush hands that call 1 bet (but fold to a second unimproved).