[jt1]

A6o is pretty loose though not terrible. I'd call or raise with A7o and K8o. Only you know how loose those guys were so A6o may be reasonable.

As for raise or fold: I don't think keeping the pot small when one of your kickers is poor is a bad thing. You could easily have the second best starting hand, here and if so you want to fold the flop UI b4 you get check raised. Raising often commits you to a flop bet so with a very marginal hand, limping is okay.

On the other hand, only you know how weak they were post flop. Do they fold the flops right away, try to steal or do they peel liberaly? For some reason, and I'm embarrased to say that I don't know why, but I'm much more inclined to raise 78s here than A6o. I guess it's because I'm less likely to loose a kicker war, and more often able to semi-bluff the turn.