i assume the decision is whether to raise

i think opponent's range shouldnt be too air heavy, so we should not have a wide bluffing range here. especially when take this line, we're not gonna have a lot of total air that's checking river

so a raise is gonna look pretty strong here, a set or something going for value vs his ace heavy range. him folding a lesser ace is definitely possible.

smallraise/fold with this hand should be a good line if we expect opponent to call with a good amount of worse hands. if opponent is tight with bluffcatching, just calling will prob be better, as we will lose less vs better hands.

if we choose to raise, our bluffs will probably have to be some weak made hands, occasionally a total give up like 87d if we decided to play it this way

I typically bet/fold here because he's gonna bluff catch all his Ax and we want to be able to bet this river with air sometimes too

The player was reg 40% agr river and I called and he had ATo I think he was going for thin value.