No-limit Omaha - Trip 7s to checkraise

[Burdzthewurd]

NL Omaha 100 (this game is running every day now on Pokerroom, tis' a gold mine)

Villain has about $500 for a stack, raises every hand $5-$10 preflop. He's had a few people just dumping off their entire stacks to him when he's held the nuts, but shown down small two pair, and call on the end even with missed draws.

I have $101

I limp UTG with 5 [img]/images/graemlins/club.gif[/img]7 [img]/images/graemlins/club.gif[/img]8 [img]/images/graemlins/diamond.gif[/img]9 [img]/images/graemlins/diamond.gif[/img], 3 more limp to Villain in the BB who makes it $6 to go, I call and 2 others call

Pot $23

Flop 772 rainbow

Villain checks, I bet $20, 2 folds, Villain checkraises to $50. Anyone fold here? I think it's a feasible push.