help me play vs a huge fish

[dtan05]

Full Tilt Poker - No Limit Hold'em Cash Game - $2/$4 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $916.43
Hero (BB): $508.70
UTG: $313.10
MP: $412.00
CO: $394.00
BTN: $90.50

Preflop: Hero is dealt 7[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/club.gif[/img] (6 Players)
UTG calls $4.00, 3 folds, SB calls $2.00, Hero checks

Flop: ($12) 4[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] (3 Players)
SB checks, <font color="red">Hero bets $8.00</font>, UTG calls $8.00, SB calls $8.00

Turn: ($36) T[img]/images/graemlins/diamond.gif[/img] (3 Players)
SB checks, <font color="red">Hero bets $22.00</font>, UTG folds, <font color="red">SB raises to $44.00</font>, Hero

??

Now i know this is a small raise, but wtf? He's like 50/1, with an agg factor of .72 over 80 hands, is that sample size even significant?