PLO 100 - 4 players

All 100bb

Hero BB with J66Qr

CO call, BU call, SB cal, Hero check

Flop (4bb) Qs Qc 5d

check, Hero bets 2bb, CO calls, BU calls, folds

Turn (10bb) : Qs Qc 5d 6s

Hero bets 6bb, CO folds, BU raises to 30bb (68bb left), Hero ?

CO no reads but seems me passive fish
BU good aggro reg

Preflop

std

Flop

don't know what's the move here.
Betting 4way oop on such a dry flop I'm showing my hand... J kicker is not that high.
Not sure about the play, the sizing, so I did this halfpot bet

Turn

sweet.
vs 2 calls on this flop, i wonder which kind of hand could have call flop here.
There must a Qxxx for sure, or 55xx. Sometimes an overpair (KKxx/AAxx, which should have raise preflop) calling for a good price, maybe sometimes (rare) ahead, and big implied odds

So bet here for value/protection vs Qxxx (lots of river can kill me). Giving a price to FDs/Straightdraws in the case someone hit this turn.

When

BU raises here (quite big).
I think at least a Qxxx.
Maybe a big Qxxx (AQxx) that want to protect vs Qxxx + draws that are coming with this turn.
It's unlikely he have Q6xx (one combo left)

I don't see "bluff" here, nether big draws (which kind of draw turn could have call that flop) ?

I'm nut here, but in an other way, a lot of river can kill me (all rivers > 6 except J), and I need protection vs this.

If I'm calling here (for trap), it'll be dangereous on most rivers.
And for him, when I'm calling here, he's not going to bluff rivers (even if i think he's not bluffs).
And with is value hands (Q5xx, 55xx, AQxx), he should be careful in most river too and check back a lot with no-nut river

So, just reraise allin turn and pray that he got 55xx/Q5xx or feel commit with Qxxx w 3OC ?