If you are good on the oars, and watch yourself you shouldn't have too much trouble. Unless you are an expert, AND are following someone who knows the river, that is the only section of the 'Duc you may want to go blind on.
I've been fishin the Olympic pen. rivers for 12 years, and fish all the rivers over there on my own, except the Sol Duc, and Calawa. When I fish those I hire a guide - otherwise they are too much work & stress.