Hand with marginal showdown value vs. 100% draw

[Roy Hobbs]

I played this hand in a ramjam 20-40 hand the other night. One crazy limper (really, any two cards), and I raise with AJo from the cutoff.

Flop is 2-3-4 rainbow. Check-bet-call.

Turn is a 9 of diamonds, creating a running flush draw.

Check-bet-raise.

Presuming for the moment that my read on this player is correct - that he has made a flush draw on the turn and may have a straight draw as well, what's my best play?

And what's my best play if I think he may have a wheel pair to go with his draw?

My thoughts -- I think the best action is either to fold or to call with the intention of raising if a blank hits. I think that reraising is a mistake, because he will certainly call, and may call the end with a small pair if he misses because of the size of the pot.

Thoughts?

RH