Top set on turn, vs possible gut shot on riv

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Villian is a bad reg imo. We have been playing a pretty intense session HU PLO on two tables. Hes gotten the better of me today tho in some really lucky spots. We're semi deep when we can't keep the table HU anymore and this happens.

My notes on him are he'll bluff alot HU and float with nothing in weird spots. He's also very tilty, but shouldnt be here in this spot.

PokerStars Pot-Limit Omaha High, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($95)
Hero ($241.65)
BB ($179.75)
UTG ($82.35)
MP ($67.05)
CO ($56.80)

Preflop: Hero is SB with A[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img].
UTG calls $1, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $4</font>, BB calls $3, UTG calls $3.

Flop: ($12) 8[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, BB checks, UTG checks.

Turn: ($12) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $11.4</font>, BB calls $11.40, UTG folds.

River: ($34.80) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $25</font>, <font color="#CC3333">BB raises to $81</font>, Hero????


Not sure how much he raises in this spot without a straight though, esp given our stack sizes and it not being a PSB. Whatcha think?