NL400 TPTK (on flop) ugly spot, i feel weak - line check

[_JerryD_]

Okay, Illuminati and others, so turn sucks then... Well, how should you play it against an unknown???

Should I have check-called the turn and bet a blocker on river??
I have a feeling that I can't play this situation profitably if i lead this turn.. am i wrong? Check-raising turn seems really suicidal to me, and that's the only real power play i can think of (and it's almost turning the hand into a bluff).

Is it just a plain turn fold situation? Check-fold?