[amoeba]

I like a check behind on the turn.

any hand that has you beat right now won't fold to a turn bet and you'll be hardpressed to fold to a 1/3 pot bet on the river even though you've inflated potsize on the turn and that 1/3 pot size bet on the river would be pretty sizable in relation to stack size.

Also, because its backdoor draw, you are pretty well disguised and very likely to get paid off if you hit.

if villain has a monster right now like a set, you don't want to face a turn checkraise without ability to see free river.