3-betting a lag

[Bremen]

Villain is 35/11 aggro 2. Against a tight raiser I'd fold/ call with other callers, however when this came up I thought it might be profitable to raise to isolate what was probably a weaker hand.

Party Poker 2/4 Hold'em (9 handed) converter

Preflop: Hero is CO with Q[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">MP2 raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">MP2 caps</font>, Hero calls.

Flop: (9.50 SB) 5[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP2 bets</font>, Hero ???

Not used to playing this weak a hand after a pf cap, made me hesitate for a bit here.