27 ju l y- au gu st 20 19 5 4 Step 3 Place one foot on the wedge and hold it against the pad or wall. Do not let go with your hand until your foot is holding the wedge in place. Step 4 With your foot holding the wedge securely, use your free hand to move the lever back into its original position to lock the de- vice in place. Step 5 Place your other foot onto the wedge and grab the backstroke grip bar or gutter and prepare to take your mark. The toes on both of your feet must be in contact with the wall or touchpad when you do your start.