Turn bet size?

[jusander]

Should I just bet the pot or go all-in in this, there is a flush draw but it's somehow unlikely, 'cos AK is on the board. Is this bad?

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) FTR converter on zerodivide.cx

UTG ($5.95)
MP ($28.85)
CO ($18.10)
Button ($21.90)
SB ($6.20)
Hero ($23.95)

Preflop: Hero is BB with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, CO calls $0.25, Button calls $0.25, SB completes, <font color="#CC3333">Hero raises to $1.5</font>, CO folds, Button calls $1.25, SB folds.

Flop: ($3.50) A[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $3.5</font>, Button calls $3.50.

Turn: ($10.50) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $18.95 (All-In)</font>, Button folds.

Final Pot: $29.45
<font color="#009B00">Main Pot: $10.50, won by Hero.</font>
<font color="#009B00">Pot 2: $18.95, returned to Hero.</font>

An overbet here is bad bad bad. Unless you have some kind of read on this guy we should no about

Simply betting $10 cuts out his odds to draw for anything, even if he knows you'll pay off on the river if he hits.

All options are open to you on this turn, doing just about anything besides pushing can't be too bad. This is another way of saying it's very opponent dependent.