A5o, good hand vs. very strong action

Isolate fish pre or fold pre imo.

We are in a difficult spot now because we allowed the BB to see a flop with 100% range. He can have K2, K3, K4, 43, 32, 42, but we don't know if he's using these hands to raise with. The lower ones need some protection, so he should use some of them to raise turn imo and that's why I call turn as played and re-evaluate river.

Maybe this time I nit think but I prefer fold preflop. Weak offsuited ace play bery nad postflop and after isolate more times we get call from limper.

Limped pot is tricky.
Basically there's 1 hand that beats you (65).
I can think of a lot of K combos villain can raise you there: 2 pairs (mainly KX), TP+FD, even some simple FDs with or without a 5...
I can't think about folding there and will happily shove. If he shows 65, I blame it on my PF action.

Iso raise out of postion with a weak off suite ace is always tricky.
Decent change you get still action of at least 1 villain and A5o isn't playing that well post-flop.
Than is calling I think better than blow up the pot out of position, but folding feels nitty.
On this flop I would just check the wheel and backdoor flush draw. It's only 4 direct outs to win and bluffing is tough multi way.
Turn play I would most likely go all the way as played. Hard to fold the 2nd nuts.

Cheers,
SDK1987

Thank you very much the analyses.