If we're planning to donk a street, why don't we c/c donk turn for 1/2 - 2/3 pot? Showing turn strength is so much stronger than flop strength and especially on such a dry board. We get so much more information from a turn bet in respect to a flop bet. If he calls/raises your bet, he probably thinks he's good and he won't be giving up. If this happens, in most cases, it'd be safe to give up on your hand (unless you hit a T on the river).