AKs - raggy flop checked down - my action?

[Borno]

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) converter

UTG ($47.75)
MP ($29)
Hero ($31)
Button ($26.3)
SB ($20.75)
BB ($44.28)

Preflop: Hero is CO with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.1.
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $1</font>, <font color="#CC3333">Hero raises to $3</font>, <font color="#666666">1 fold</font>, SB (poster) calls $2.90, <font color="#666666">1 fold</font>, MP calls $2.

Flop: ($9.25) 2[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, MP checks.

Final Pot: $9.25


Hero should do what here?

(I bet the pot - does this make sense to anyone)