When wading across a fast river that can cut your feet out from under you it is wise to use a wading staff. I personally use a Folstaff. Use your wading staff in your upstream hand. This wasy if you do fall quite possibly you will start falling by leaning upstream and the force of the current can help you regain your balance. The wading staff is a valuable asset since it ensures that you have two points of contact with the bottom of the stream or river at all times. This is particularly important when moving water approaches your waist and above.