15$ 9man AKo

I would go more preflop, sth about 220 and get it in on this positions against a random guy.

I won't advocate flatting OOP with AK in a situation where it's very likely we are gonna play 4-way pot.

3betting is nice. Sizing is not great though, I will make it 250 though(more than 220 because we are OOP with a drawing hand, I don't want to encourage multiway action). From there, we have to decide whether we 3bet/fold or 3bet/stack off here.

I think vs BTN fish, it could be ok, although still marginal.

If we don't hit a pair-we cbet most boards Hard to say what's best with so many possible scenarios postflop and given that we face an unknown.

F.e. if flops hits 325ss, I am cbet/getting it in vs a raise with a gutter and 2 overs(assuming these 2 overs are gonna be good almost always and villain might play worse Ax this way).

On 89T, I am not even cbetting, because I think villain(fish) might have a lot of broadway or connected hands that will hit this board.

On JJ3 type of dry boards, I cbet small(1/3 of the pot) and work from there on.