[Catt]

A7o is a very strong hand when it is folded to you in the CO.

I'll raise A7o way, way more often than I'll fold it in these circumstances -- I can say with certainty that I will not be open-limping with it. But I'll also not raise the flop when I'm closing the action without a stupendous read. Just call getting 11:1, hoping you have the best hand but really looking for a turned 7 (where it gets interesting) or a turned OESD that presents a profitable call. Raising this flop is generally not a good play IMHO in these cirumstances -- if a flop raise could buy a free turn, then maybe, but I don't think you buy a free turn in what looks to be an obvious steal situation, and you open yourself to a cap when SB or BB actually has a very strong hand.