NL100 fish puts my backdoor flush to the test

[chris216]

Villain was 50/3/2 over 30 hands. No reads. Is this a straight or trips often enough to make this a profitable call?

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($134.95)
SB ($111.70)
Hero ($105.40)
UTG ($161.85)
MP ($100)
CO ($102.50)

Preflop: Hero is BB with 6[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/club.gif[/img].
UTG calls $1, <font color="#666666">2 folds</font>, Button calls $1, SB completes, Hero checks.

Flop: ($4) 3[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets $3</font>, UTG calls $3, Button folds, SB folds.

Turn: ($10) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $7</font>, UTG calls $7.

River: ($24) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $17</font>, <font color="#CC3333">UTG raises to $150.85</font>, Hero has $77.40 left

[grando]

wtf call call call

this is a 3 so much