3/6 -- deep rr pot river bluff

[tcorbin16]

villian is mastr ludi solid TAG. we have a lil bit of history but idk if its enough to alter his decision on calling this bet. he prob views me as looser tag capable of makin a few moves i would think.

Full Tilt Poker - No Limit Hold'em Cash Game - $3/$6 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $1,176.45
BB: $270.15
UTG: $1,248.60
MP: $797.00
Hero (CO): $1,287.60
BTN: $522.90

Preflop: Hero is dealt 7[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/heart.gif[/img] (6 Players)
2 folds, <font color="red">Hero raises to $18.00</font>, BTN folds, <font color="red">SB raises to $61.00</font>, BB folds, Hero calls $43.00

Flop: ($128) Q[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/spade.gif[/img] (2 Players)
SB checks, Hero checks

Turn: ($128) J[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">SB bets $85.00</font>, <font color="red">Hero raises to $260.00</font>, SB calls $175.00

River: ($648) 7[img]/images/graemlins/club.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $500.00</font>

stacks were eff ~800 on river, who likes a shove more than a
bet? who checks back?

i put him on AQ AA KK, maybe AK with some sort of spade draw.