$6.50 - AKo plus a BB hand on the bubble with a sit-out

[JuntMonkey]

PokerStars Tournament, Big Blind is t200 (4 handed) Converter on pregopoker.com

CO (t5145)
Hero (t1165)
SB (t6475)
BB (t715)

Preflop: Hero is in Button with K[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/club.gif[/img]
CO calls t200

BB is sitting out, has been for most of the tournament, and I doubt he'll be back. WTF am I supposed to do here? CO limps a lot, don't know his calling range here if I push.

Then there's this - not positive but I think Mr. Sit-Out unexpectedly came back at this point. Villain likes to make idiot bluffs.

PokerStars Tournament, Big Blind is t200 (4 handed) Converter on pregopoker.com

CO (t6375)
Button (t115)
SB (t6145)
Hero (t865)

Preflop: Hero is in BB with T[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/club.gif[/img]
<font color="gray">CO folds</font>, <font color="gray">Button folds</font>, SB calls t100, Hero checks

Flop: (t400) T[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img] (2 players)
SB checks, Hero checks

Turn: (t400) 8[img]/images/graemlins/spade.gif[/img] (2 players)
<font color="red">SB bets t200</font>