Ax Double suites open all day, I think single suit is bottom of rfi range if the two side cards didn’t connect w/ A I think I’d fold on single suited variants. Especially in high rake atmosphere…..

If you have a single suited ace you need either high or connected cards along with it. I would not open the hands worse than A765ss from UTG. And the higher your rake environment, the tighter you should open from early positions.

I'd rather prefer A-5-ish hands in favor of A-2-ish hands because of the well known reasons...
Depending on the table(s) I'd probably not even consider playing em at all or only late (limping when the whole wall did) or IP