playing back with 'nothing'

[Tryptamean]

These spots don't get posted that much because it has a lot to do with the flow of the game/opponent/history/frequency etc. I think its pretty important to pick some spots to play back at the right opponents and I wonder how good my selection is and if I might be selecting too many/too few/wrong spots.

So here is the hand:
I am new to the table but I have played with this tag a fair amount. I have one note that he picked a strang spot to semi-bluff (with a gutshot + unders) on the turn. Other than that I have not noticed anything noteworthy. He is 24/17/2 with a 34% wtsd.

Now everyone knows that K62r is a very bluffable flop and I expect ace hi to get to showdown a lot (but not always). My cards also matter and I consider check-raising this flop because I have overs to two board cards and a bdfd. This is because I feel I can call a 3-bet profitably, and fold the turn if I do not pick up a pair or draw.

PokerStars 10/20 Hold'em (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is BB with 8[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Button raises</font>, <font color="#666666">1 fold</font>, Hero calls.

Flop: (4.50 SB) K[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>

So... What do you do here? Do you check-raise here against any other opponent type?

Bonus question: if this same opponent is in the SB, do you prefer floating him or raising the flop? (or folding)