I don't check raise enough (PS5/10)

[Spook]

I just transitioned up to PS 5/10, still doing some 3/6 and one or two tables at time looking for good table selection.
I don't find this a problem at the beginning of sessions, TAG play works... but then it sort of stops working for me without being able to checkraise effectively. I can induce some bluffs on the river, but have a hard time raising.
I also might not be three betting enough, but I haven't looked yet.
Here is one hand I try to check raise.

Player to my left will not raise anyone or anything. but he will bet out.

PokerStars 5/10 Hold'em (6 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with 2[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">UTG raises</font>, MP calls, CO calls, <font color="#666666">1 fold</font>, <font color="#CC3333">SB 3-bets</font>, Hero calls, UTG calls, MP calls, CO calls.

Flop: (15 SB) 2[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero checks, <font color="#CC3333">UTG bets</font>, MP folds, CO folds, SB calls, Hero calls.

Turn: (9 BB) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, UTG checks.

River: (9 BB) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks. UTG... checks.