However, the potential strength of a flopped gutshot straight draw is only realized a small amount of the time - about 8.5% on the turn and 16.5% by the river. These hands require particular care because you are drawing to a strong (and often well-disguised hand) in the form of a straight. It's easy to get in trouble chasing a gutshot straight.
Going for Gutshot Straight Draws When You Won’t Hold the Nuts.