The thing is, this is a pretty read dependent line to pull on a nit. Don't worry about how you appear, they rarely care. I'd rather just bet the turn again. When you check and he bets he likely has a hand he really likes and will almost always call a crai with because you can't really put him a float. And he's not usually betting a mediumish PP. Plus you look insanely bluffy, no one over shoves a set here.