100NL: Top Pair Turns Into A Bluff

[Kos13]

Villain is a 12/4 reg tagfish, and we know each other pretty well (I run about 14/9 and can be overly aggro at times). I usually just fire three shells with 43/set here, but I've been known to take strange lines with big hands against regs. Being a tagfish, he'd raise this flop against an average player, but he knows I probably don't have a gutshot, so a set is at least possible. When he smooth calls the flop, I'd say his range is probably sets, 77-TT, or just maybe A6s...43 is not even the least bit possible.

Good/bad bluff? Can I rep 43/set with this line and our history? The size of the raise really doesn't matter because he's only calling with a set. If I get called, I'm just c/f any river (including a 6).

And since I posted this hand, I might as well ask...what is everyone's normal line with this flop? Leading out sucks, c/c sucks, and c/f sucks...I never really know what to do.

UB NLHE - $0.50/$1 Blinds - 9 Players

Hero (SB): $102.30
BB: $143.05
UTG: $150.80
UTG+1: $125.50
MP1: $145.20
MP2: $101.45
MP3: $85.70
CO: $98.00
BTN: $100.90

Preflop: Hero is dealt 7[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/spade.gif[/img] (9 Players)
UTG calls $1.00, UTG+1 calls $1.00, 4 folds, BTN calls $1.00, Hero calls $0.50, BB checks

Flop: ($5) 6[img]/images/graemlins/heart.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/spade.gif[/img] (5 Players)
<font color="red">Hero bets $3.00</font>, 3 folds, BTN calls $3.00

Turn: ($11) K[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $6.75</font>, <font color="red">Hero raises to $22.50</font>