[King Yao]

I think this is player dependent. But that's an easy answer to a tough question. Any tough question is player dependent if you know what the player will do with certain hands.

So, assuming its against an unknown (or a player who you don't know what he would do with AJ, AT if you raise), I think its a close call. With the low board, I would lean towards agreeing with you (check-calling on Flop, Turn), because he will call down with AK, AQ and probably AJ, AT too - and definitely any pair, even 22. If you had JT, and the Flop was Q9x, then I think its a different story - with that Flop you are more likely to be up against a pair, but you are also more likely to see your opponent fold, which is what matters.

So I do agree with your post-Flop play.

But: do you regularly open-raise with 87s UTG+1 in 6-handed? my opinion is that it is too aggro.