Was travelling and playing 1-2-100 in Colorado (max raise is 100 on any given raise size)

Fairly new to the table, hero is up 150, hasn't shown down
Saw villain call an all in with double belly draw with 56 on 842 board with 56 off in a raised pot and win.

Hero is CO (450)
Villain MP (covers)

Villain MP raises to 10
Hero calls with Kc3c
Button calls
Big blind calls

Flop KsKd9s

Big blind bets 15, villain calls, hero raises to 70, button folds, big blind folds villain re-raises to 170. Hero calls?

Turn Js
Villain bets 100 (hero folds?)

It's a weird betting format, I'm beating AA, QQ, JJ and flush draws on the flop. Call-raising would be strange play with any pocket pair from villain, is flop a fold? Does villain ever have anything other than AK, KQ, KJ and 99 here?

Fold to back raise. Back raise = nuts.

Ya you're never good when he reraises you otf.

Thanks guys, after the hand also realized I'm never good on the flop raise. As played stacked off against 99, looking back should've been easy fold.

fold or 3! pre. (mostly fold)
AP raise smaller on the flop (this spot is pretty thin though. Why preflop is really bad), then snap fold to both the backraise and the turn bet.

This.

Yeah on a drawy but paired flop boats are happy calling small bets hoping bettor makes their flush or straight so they can pay off the boat. However, boats switch to "gii now" mode when big bets and raises go in because they figure to be up against trips and want the money in before a 3 flush or straight saves the trips from stacking off.

I also don't like calling KXs, perfect 3betting hand vs a folder. This villain though seems loose and stationy from previous hand so I'd not be 3betting light but instead expanding my value 3bet range and ditch the AXs /KXs/QXs/SC light 3bets altogether. I'll call some AXs/strong SC and fold the KXs/QXs /small SC and gappers.

I posted this to see if the optimal exit point was the flop or the turn for our hand, seems like you all agree flop fold is right (which is what I thought was the case thinking about this hand). Either way when turn came spade it should've been easy fold, but call 100 for a pot of 400 is not a format I'm familiar with. Fold pre is the easiest way to play this hand for sure -3! pre is interesting too (agreed not against this villain).

I fold preflop, will 3! if villain can fold.

Fold to flop 3! as stated. KJ would be a tougher spot.