1/2 with $11 straddle BTN, $800 effective, 9 handed. +1 is loose and leans more passive but is more aggressive than the traditional loose passive, CO is an extreme LAG/borderline maniac, and BTN is loose passive. If hero has an image at all, it's TAG.

EDIT: Clarification on CO's tendencies - he'll call super wide pre, regularly run multiple street bluffs, regularly bluff multiway when checked to/ott when he doens't have position and the action checks around otf

OTTH

Hero opens SB $55 K K, +1 calls, CO calls, BTN calls.

Flop ($222): J T 9. Hero checks, +1 checks, CO bets $200, BTN folds. Hero? I feel like we have to call if we're last to act, but how much does this change with +1 still to act?

Against a borderline maniac probably.

But really we need info on his maniacal tendencies to really give good advice.

I edited the OP for more information. What about with +1 still to act though?

In that case just ship.

Its a bad board but stacks are relatively pretty shallow given the huge straddle.

So I take it you don't care at all about +1?

How trappy is your +1? If he is likely to check to check good hands to CO then he is a concern but I don't think he matters enough to change hero's plan. If you have some read that he is still interested in the pot and likely trapping I could get behind folding but it's really painful in this situation.

You have an over pair, an SPR of 4 and a scary board where you block draws. You are pretty much committed and with a bluffy manic CO letting him bluff is the way to go.

This is exactly the sort of hand you need a big bankroll for. Letting CO bluff off his money is clearly +EV but it's going to be some small fraction of the final pot. You could easily end up with a 2K pot and a +EV < $200 because you are going to be losing a fair portion of the time.

+1 hasn't done anything to indicate he has a hand. Even if he checks range so he's not narrowed at all he only has you beat like 15% of the time maybe, and you still have decent equity against two pairs and sets, just not great against straights.

Most players are going to bet at least some of their strong hands though, even with an aggressive player behind, so they should be somewhat discounted. Our EV is high enough against CO that +1 waking up with something shouldn't discourage us from continuing. Even AA is quite a bit worse here but I wouldn't fold that either.

Vs described villain at 72bb to start the hand I crai

Crappy spot. Not loving it but not folding either. The issue with the +1 player is that if you call, any hand with a Q is getting the odds to continue as well.

What is the maniacs sizing tendencies? This in my mind is the crucial question. Does he go full pot for value or bluff? My experience is that even maniacs often don't full pot without value. If I have a decent read on his tendencies I may find a fold. Otherwise I'm sticking it in, riding the variance train and expect to get beat a good percentage of the time.

Fwiw... I find straddle hands are bluffed more often at low levels by action players.

Very good points itt, thank you for the advice.

@BlueSpade84, I haven't found any sizing tells with him. He seems balanced with his sizings.

Why did you choose this size to open? I think I might have gone smaller (like $30) or gone for a limp/raise if I thought someone else was likely to raise. (Though with the straddle this high it seems not likely enough, at least in my experience.)

You're right, I should've gone larger given we went four ways to a flop .

I was trying to get it HU post.

So what did he snap you off with?

Agree limp raise is probably better

I agree with earlier posters that the optimal line here that nets us the most money longterm is to just call, and give the maniac rope to bluff it all off to us with as wide range as possible.

If we dont have the bankroll to feel comfortable with that line, or for whatever reason dont want to face the extra variance shipping it on the flop is the second best option. That way we cant be outplayed at least on the turn, possibly folding the best hand if we chicken out on scary cards.