nl25 AK on the button

[sharkscopeaholic]

I know i should be raising 1-2 prf but its usually a hand thats easy to be stacked against for me (running into trips) so i just limped. I also thought if i was behind i wouldnt be improving very oftne on the river.
I see would push in a tourney but not sure waht to do here?
Full Tilt Poker No-Limit Hold'em, $0.25 BB (8 handed) Hand History converter Courtesy of PokerZion.com

saw flop|<font color="#C00000">saw showdown</font>

MP2 ($24.25)
CO ($9.75)
Hero ($40.05)
SB ($20)
BB ($23.35)
UTG ($21.75)
<font color="#C00000">UTG+1 ($26.70)</font>
MP1 ($21.30)

Preflop: Hero is Button with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img]. CO posts a blind of $0.25.
<font color="#666666">1 fold</font>, UTG+1 calls $0.25, <font color="#666666">2 folds</font>, CO (poster) checks, Hero calls $0.25, SB completes, BB checks.

Flop: ($1.25) 8[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, BB checks, UTG+1 checks, CO checks, <font color="#CC3333">Hero bets $0.75</font>, SB folds, BB folds, UTG+1 calls $0.75, CO folds.

Turn: ($2.75) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG+1 bets $2</font>, Hero folds.

Final Pot: $4.75