[Rush17]

Whether you should check or bet out on 4th street isn't NEARLY as important as the decision you chose on 3rd. Yeah, you can wind up catching good down the road, but you are starting out at a disadvantage against a 3 card low draw and a high pair. Wait for a better spot. If you want to play it, then be the first one in the pot and raise it yourself (preferably in a steal spot or in shorthanded play).

That said, If you bet out on 4th, you might fold off the King doorcard in fear that you just hit Aces (unless he is rolled up or has AA in the hole). But I can't see you folding off the other two hands if 4th street wound up improving their hands.

Btw, if you checkraised the hand against me, I'm probably going to be more inclined to give you AA opposed to a strong low draw, because, most players will try to thin the field with a pair yet they wouldn't do that with a good draw, because good draws will always welcome the field. So, if you checkraise, the other lows are going to put you on AA, so then why wouldn't they continue to draw for their lows (and especially if one or both of them are drawing to straights)? And (vice versa) if you bet right out (trying to rep. the low draw) then if either one of them has a pair, well they're probably going to call that bet, too. So, it's six on one hand, half a dozen on the other...can't have it both ways, you either have a low draw or some kind of a high hand, and until the hands unfold a bit more, your opponents, at this time, are going to be more concerned at what they hold.

I would bet the turn, followed by checking, followed by checkraising. I don't think CR'ing accomplishes what you would like it to accomplish, and now you have cost yourself 2 bets.