5/5/10
8 handed

Doorcard: T

I limp UTG A3456
MP limps, CO limps, blinds call, straddle checks.

(60)
Flop: T62
Check, check, check, I (1000) bet 30, MP folds, CO (passif) (310) calls, SB (700) calls, BB (Maniac station) (1200) calls, straddle folds.

(180)
Turn: J
Check, check, I bet 100, call, call, call

(580)
River: 3
Check, check, hero bets...
I'm not sure about the sizing here:

I have 2 options:
1) bet 200/300 trying to get called by a weaker flush or A5.
2) bet pot hoping that someone have also the NL.

I would bet pot with the NF without a low because the 3 counterfit a naked NL.

When I bet this turn 4 ways, I almost always have the NF or second flush.

What option would you choose?

i'd bet bigger OTT and bet pot for sure OTR

Fold pre. Flop and turn are ok, maybe go bigger on flop. As played standard to bomb river at least 2/3 psb..

Fold Pre? What hands would you raise utg?

As others have said, Bet more than 30 into 60 on flop. Definitely bet more on river. I don't think there should be many times we are betting 200 into 580 with nut-nut into 2 players.

You have the nuts and a superstation in the hand. Limp pre, pot every street

Flop is too small, I agree.

Turn is fine, they are folding a flush if I bet pot, a set is folding too and a nut low draw is folding too.

Maniac station never has a set.

The decision is on river.

I'd fold pre, too. Later, go for big sizings or check. I'd pot river.