Right table. You isolate a limper with A3o on the button. You mention here (and in previous videos) that you will often isolate a limper with a hand that you would normally have open raised with pf.
The A3o has some high card strength with the Ace, suggesting that you can possibly win the hand unimproved if your isoation raise allows you to play the hand heads up with the limper. However, would you also consider iso raising a limper with a hand without much high card strength, that you might open raise with, such as the 96o in the above hand on the left table ?
Sure. Isoing with hands like T9s is common and has plenty of merit. I have no problem lopping off the bottoms of your opening ranges when you're going to iso, though. A lot of the value of opening a pot lightly comes from the potential to take the pot down preflop, and as soon as someone limps that opportunity is no longer available. So I might open 96o otb but only iso 98o or maybe not even that. Something like T9o or 98s would be standard though.
It's not only showdown value that's important here (high card strength or a pair, etc) -- equity, fold equity, and postflop playability are other important factors. Hypothetically if we knew a player limped any two cards and only continued on the flop when he flopped something reasonable (pair or good draw) then it'd be correct to iso him with any two cards and always fire the c-bet. Obviously such players don't really exist but my point is that vs guys who give up too much on the flop, or play in a really predictable way, that the strength of your hand pf isn't the only, or even main, factor.